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Gas

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A ==Key Stage 2=====Meaning==='''Gas''' is a [[State of Matter|state of matter]] in which the [[Particle|particles]] are separated by large distances that can change size and can move freelyshape to fit any container.
===About Gases===
: Most '''gases''' are invisible but we can feel them.
: When the [[air]] moves we call it the wind.
{| class="wikitable"
|+ Gases are a '''state of matter''' that:
*Air (A mixture of gases, mostly nitrogen and oxygen)
*Steam
 
==Key Stage 3==
===Meaning===
[[File:ParticleModelGas.png|right|300px|thumb|The [[Particle Model]] of a [[gas]].]]
[[Gas]] is a [[State of Matter]] in which the [[Particle|particles]] are separated by large distances and can move freely.
 
===About Gases===
{| class="wikitable"
|-
|[[File:ParticleModelGasPour.png|center|600px]]
|-
| style="height:20px; width:600px; text-align:left;" |
*[[Gas]]es cannot hold their shape because the particles are free to move.
*[[Gas]]es fit the shape of their containers because the particles are free to move.
*A [[gas]] can be poured and will flow because the particles are free to move.
|}
 
{| class="wikitable"
|-
|[[File:ParticleModelGasSquash.png|center|500px]]
|-
| style="height:20px; width:500px; text-align:left;" |'''Gas''' can be squashed into a smaller size because the [[particle]]s are spread apart.
|}
 
==Key Stage 4 Foundation==
===Meaning===
[[Gas]] is a [[State of Matter]] in which the [[Particle|particles]] are separated by large distances and can move freely.
 
===About Gases===
: When a [[substance]] is in its [[gas]]eous [[State of Matter|state]] it is always less [[Density|dense]] than in its [[liquid]] or [[solid]] [[State of Matter|state]] due to the [[particle]]s in a [[gas]] being spread far apart from each other.
: A [[substance]] which is [[gas]]eous at [[Room Temperature|room temperature]] has a smaller [[force]] of [[attraction]] between [[particle]]s than a [[substance]] which is [[liquid]] or [[solid]] at [[Room Temperature|room temperature]].
 
{| class="wikitable"
|+Gases
|-
| style="height:20px; width:200px; text-align:center;" |'''Particle Diagram'''
| style="height:20px; width:200px; text-align:center;" |'''Particle Arrangement'''
| style="height:20px; width:200px; text-align:center;" |'''Property'''
|-
|rowspan="6"|[[File:ParticleModelGas.png|center|200px]]
|rowspan="3"|[[Particle]]s are free to move in all directions.
| style="height:20px; width:200px; text-align:center;" |[[Gas]]es fit the size of their container.
|-
| style="height:20px; width:200px; text-align:center;" |[[Gas]]es fit the shape of their container.
|-
| style="height:20px; width:200px; text-align:center;" |[[Convection]] happens most easily in [[gas]]es.
|-
|rowspan="3"|[[Particle]]s are spread apart.
| style="height:20px; width:200px; text-align:center;" |[[Gas]]es can be [[compressed]] into a smaller [[Volume (Space)|volume]].
|-
| style="height:20px; width:200px; text-align:center;" |[[Sound]] passes through [[gas]]es slower than [[liquid]]s and [[solid]]s.
|-
| style="height:20px; width:200px; text-align:center;" |[[Thermal Conduction]] is very poor in a [[gas]]es.
|}
 
==Key Stage 4 Higher==
===Molar Gas Volume===
: At [[Standard Temperature and Pressure]] (20°C and 101,000Pa) the [[Volume (Space)|volume]] of one [[mole]] of [[gas]] is 24 dm<sup>3</sup>.
: The [[Volume (Space)|volume]] of [[gas]] required or [[product|produced]] in a [[Chemical Reaction|chemical reaction]] can be calculated from the [[mass]] of the [[gas]] and its [[Relative Formula Mass]].
====Example Calculations====
{| class="wikitable"
|+ Finding the Volume of Gas
|-
| style="height:20px; width:250px; text-align:center;" |'''Calculate the [[Volume (Space)|volume]] of 4g of [[Hydrogen]] [[gas]].'''
| style="height:20px; width:250px; text-align:center;" |'''Calculate the [[Volume (Space)|volume]] of 8g of [[Oxygen]] [[gas]].'''
| style="height:20px; width:250px; text-align:center;" |'''Calculate the [[Volume (Space)|volume]] of 20g of [[Methane]] [[gas]].'''
|-
| style="height:20px; width:250px; text-align:center;" |1.'''Find the [[Relative Formula Mass]] of the [[gas]].'''
 
[[Chemical Formula]] of [[Hydrogen]] = H<sub>2</sub>
 
[[Relative Atomic Mass]] of [[Hydrogen]] = 1g
 
[[Relative Formula Mass]] of H<sub>2</sub> = 2g
 
| style="height:20px; width:250px; text-align:center;" |1.'''Find the [[Relative Formula Mass]] of the [[gas]].'''
 
[[Chemical Formula]] of [[Oxygen]] = O<sub>2</sub>
 
[[Relative Atomic Mass]] of [[Oxygen]] = 16g
 
[[Relative Formula Mass]] of O<sub>2</sub> = 32g
| style="height:20px; width:250px; text-align:center;" |1.'''Find the [[Relative Formula Mass]] of the [[gas]].'''
 
[[Chemical Formula]] of [[Methane]] = CH<sub>4</sub>
 
[[Relative Atomic Mass]] of [[Hydrogen]] = 1g
 
 
[[Relative Atomic Mass]] of [[Carbon]] = 12g
 
[[Relative Formula Mass]] of CH<sub>4</sub> = 16g
|-
| style="height:20px; width:250px; text-align:center;" |'''2. Calculate the number of [[mole]]s of [[gas]].'''
 
1 [[mole]] = 2g
 
No. [[Mole]]s = <math>\frac{Mass}{M_r}</math>
 
No. [[Mole]]s = <math>\frac{4}{2}</math>
 
No. [[Mole]]s = 2mol
| style="height:20px; width:250px; text-align:center;" |'''2. Calculate the number of [[mole]]s of [[gas]].'''
 
1 [[mole]] = 32g
 
No. [[Mole]]s = <math>\frac{Mass}{M_r}</math>
 
No. [[Mole]]s = <math>\frac{8}{32}</math>
 
No. [[Mole]]s = 0.25 mol
| style="height:20px; width:250px; text-align:center;" |'''2. Calculate the number of [[mole]]s of [[gas]].'''
 
1 [[mole]] = 16g
 
No. [[Mole]]s = <math>\frac{Mass}{M_r}</math>
 
No. [[Mole]]s = <math>\frac{20}{16}</math>
 
No. [[Mole]]s = 1.25 mol
|-
| style="height:20px; width:250px; text-align:center;" |'''3. Find the [[Volume (Space)|volume]] in dm<sup>3</sup>.'''
 
[[Volume (Space)|Volume]] = 24 x (number of moles)
 
[[Volume (Space)|Volume]] = 24 x (2)
 
[[Volume (Space)|Volume]] = 48dm<sup>3</sup>
| style="height:20px; width:250px; text-align:center;" |'''3. Find the [[Volume (Space)|volume]] in dm<sup>3</sup>.'''
 
[[Volume (Space)|Volume]] = 24 x (number of moles)
 
[[Volume (Space)|Volume]] = 24 x (0.25)
 
[[Volume (Space)|Volume]] = 6dm<sup>3</sup>
| style="height:20px; width:250px; text-align:center;" |'''3. Find the [[Volume (Space)|volume]] in dm<sup>3</sup>.'''
 
[[Volume (Space)|Volume]] = 24 x (number of moles)
 
[[Volume (Space)|Volume]] = 24 x (1.25)
 
[[Volume (Space)|Volume]] = 30dm<sup>3</sup>
|}
 
{| class="wikitable"
|+ Finding the Mass of Gas from the Volume
|-
| style="height:20px; width:250px; text-align:center;" |'''Calculate the [[mass]] of 12dm<sup>3</sup> of [[Hydrogen]] [[gas]].'''
| style="height:20px; width:250px; text-align:center;" |'''Calculate the [[mass]] of 36dm<sup>3</sup> of [[Nitrogen]] [[gas]].'''
| style="height:20px; width:250px; text-align:center;" |'''Calculate the [[mass]] of 18dm<sup>3</sup> of [[Ethane]] [[gas]].'''
|-
| style="height:20px; width:250px; text-align:center;" |1.'''Find the [[Relative Formula Mass]] of the [[gas]].'''
 
[[Chemical Formula]] of [[Hydrogen]] = H<sub>2</sub>
 
[[Relative Atomic Mass]] of [[Hydrogen]] = 1g
 
[[Relative Formula Mass]] of H<sub>2</sub> = 2g
 
| style="height:20px; width:250px; text-align:center;" |1.'''Find the [[Relative Formula Mass]] of the [[gas]].'''
 
[[Chemical Formula]] of [[Nitrogen]] = N<sub>2</sub>
 
[[Relative Atomic Mass]] of [[Nitrogen]] = 14g
 
[[Relative Formula Mass]] of N<sub>2</sub> = 28g
| style="height:20px; width:250px; text-align:center;" |1.'''Find the [[Relative Formula Mass]] of the [[gas]].'''
 
[[Chemical Formula]] of [[Ethane]] = C<sub>2</sub>H<sub>6</sub>
 
[[Relative Atomic Mass]] of [[Hydrogen]] = 1g
 
[[Relative Atomic Mass]] of [[Carbon]] = 12g
 
[[Relative Formula Mass]] of C<sub>2</sub>H<sub>6</sub> = 30g
|-
| style="height:20px; width:250px; text-align:center;" |'''2. Calculate the number of [[mole]]s of [[gas]].'''
 
[[Volume (Space)|Volume]] = 24 x (number of moles)
 
12 = 24 x (number of moles)
 
Number of moles = 12/24
 
Number of moles = 0.5
| style="height:20px; width:250px; text-align:center;" |'''2. Calculate the number of [[mole]]s of [[gas]].'''
 
[[Volume (Space)|Volume]] = 24 x (number of moles)
 
36 = 24 x (number of moles)
 
Number of moles = 36/24
 
Number of moles = 1.5
| style="height:20px; width:250px; text-align:center;" |'''2. Calculate the number of [[mole]]s of [[gas]].'''
 
[[Volume (Space)|Volume]] = 24 x (number of moles)
 
12 = 24 x (number of moles)
 
Number of moles = 18/24
 
Number of moles = 0.75
|-
| style="height:20px; width:250px; text-align:center;" |'''3. Find the [[mass]] of [[gas]] from the number of [[mole]]s.'''
 
No. [[Mole]]s = <math>\frac{Mass}{M_r}</math>
 
0.5 = <math>\frac{Mass}{2}</math>
 
Mass = <math>0.5\times2</math>
 
Mass = 1g
[[Volume (Space)|Volume]] = 48dm<sup>3</sup>
| style="height:20px; width:250px; text-align:center;" |'''3. Find the [[mass]] of [[gas]] from the number of [[mole]]s.'''
 
No. [[Mole]]s = <math>\frac{Mass}{M_r}</math>
 
1.5 = <math>\frac{Mass}{28}</math>
 
Mass = <math>1.5\times28</math>
 
Mass = 42g
| style="height:20px; width:250px; text-align:center;" |'''3. Find the [[mass]] of [[gas]] from the number of [[mole]]s.'''
 
No. [[Mole]]s = <math>\frac{Mass}{M_r}</math>
 
0.75 = <math>\frac{Mass}{30}</math>
 
Mass = <math>0.75\times30</math>
 
Mass = 22.5g
|}
 
===References===
====AQA====
 
:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Gas, pages 13, 34-5, 82-5, 96-101, GCSE Physics; Student Book, Collins, AQA '']
:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Gas; pressure, pages 82-5, 96-9, 257, GCSE Physics; Student Book, Collins, AQA '']
:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Gas; volume, page 98, GCSE Physics; Student Book, Collins, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945571/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945571&linkCode=as2&tag=nrjc-21&linkId=9e29fad914244909903e5e93f8a01d137 ''Gases pages 36, 37, 46, 107, GCSE Chemistry; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Gases, page 107, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Gases, page 71, GCSE Physics, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945571/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945571&linkCode=as2&tag=nrjc-21&linkId=9e29fad914244909903e5e93f8a01d254 ''Gases, page 88, GCSE Chemistry; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Gases, page 97, GCSE Combined Science Trilogy; Physics, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945962/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945962&linkCode=as2&tag=nrjc-21&linkId=476bb5c8d1dfb5c08ac81b6d4d1c98d8 ''Gases, pages 100, 101, 124, GCSE Chemistry, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Gases, pages 164-5, 323, GCSE Combined Science Trilogy 1, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Gases, pages 6, 36-37, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']
:[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Gases, pages 78-79, 83, 86-89, GCSE Physics; Third Edition, Oxford University Press, AQA '']
:[https://www.amazon.co.uk/gp/product/178294639X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294639X&linkCode=as2&tag=nrjc-21&linkId=51599bb45a2bfaf7c1b6a978b2ca2616 ''Gases, pages 98, 99, GCSE Combined Science Trilogy; Chemistry, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Gases; analysis, pages 184-185, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']
:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Gases; atmosphere, pages 194-205, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Gases; density of, page 323, GCSE Combined Science Trilogy 1, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09923 ''Gases; gas pressure, page 193, GCSE Combined Science; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac211 ''Gases; gas pressure, page 41, GCSE Physics; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09924 ''Gases; gas syringes, pages 140, 232, GCSE Combined Science; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Gases; greenhouse effect, pages 198-202, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Gases; Greenhouse gases, pages 170-3, GCSE Combined Science Trilogy 2, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851346/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851346&linkCode=as2&tag=nrjc-21&linkId=3ac654f4b0da781c49c855a1af4c92ea ''Gases; identification of, page 207, GCSE Chemistry, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Gases; Identification of, pages 160, GCSE Combined Science Trilogy 2, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Gases; In the atmosphere, pages 167, GCSE Combined Science Trilogy 2, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09925 ''Gases; measuring volumes, pages 140, 232, 237, GCSE Combined Science; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09926 ''Gases; natural gas, page 178, GCSE Combined Science; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac212 ''Gases; natural gas, pages 18, 21, GCSE Physics; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Gases; natural gas, pages 45, 46 54, 56, GCSE Combined Science Trilogy; Physics, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Gases; natural gas, pages 47, 48, 56, 58, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Gases; particle model of, pages 330-1, GCSE Combined Science Trilogy 1, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Gases; particle model of, pages 78-80, 85-6, GCSE Physics, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Gases; particle motion, page 104, GCSE Combined Science Trilogy; Physics, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09927 ''Gases; particle motion, page 193, GCSE Combined Science; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Gases; particle motion, pages 114, 115, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac213 ''Gases; particle motion, pages 38, 41, GCSE Physics; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Gases; pressure, page 104, GCSE Combined Science Trilogy; Physics, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Gases; pressure, page 36, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Gases; pressure, pages 114, 115, 169, 171, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Gases; states of matter, pages 106, 107, 110-112, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09928 ''Gases; states of matter, pages 121, 122, 193, 195, GCSE Combined Science; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac214 ''Gases; states of matter, pages 38-40, GCSE Physics; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Gases; states of matter, pages 96, 97, 100-102, GCSE Combined Science Trilogy; Physics, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09929 ''Gases; tests for, page 153, GCSE Combined Science; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Gases; Volume and mass measurement, pages 120, GCSE Combined Science Trilogy 2, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Gases; volume, pages 78-79, 129, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']
 
====Edexcel====
 
:[https://www.amazon.co.uk/gp/product/1292120215/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120215&linkCode=as2&tag=nrjc-21&linkId=8f96ddb76196848bafdb124354e4cf77 ''Gases, molar volumes of, pages 118-119, GCSE Chemistry, Pearson, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Gases, page 300, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782945725/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945725&linkCode=as2&tag=nrjc-21&linkId=694be7494de75af3349537d34e13f7f0 ''Gases, pages 34, 35, GCSE Chemistry; The Revision Guide, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948147/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948147&linkCode=as2&tag=nrjc-21&linkId=f63dcd8345f4e49c717b39a228a36c7c ''Gases, pages 96, 98, GCSE Chemistry, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Gases, pages 97, 98, GCSE Combined Science; The Revision Guide, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Gases; doing work, page 312, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Gases; pressure, page 424, GCSE Combined Science, Pearson Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Gases; pressure, pages 192, 194-195, GCSE Physics, Pearson Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Gases; pressure, pages 310-312, 319, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Gases; temperature, page 192, GCSE Physics, Pearson Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Gases; temperature, page 424, GCSE Combined Science, Pearson Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Gases; volume, pages 194-195, GCSE Physics, Pearson Edexcel '']
 
====OCR====
:[https://www.amazon.co.uk/gp/product/1782945679/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945679&linkCode=as2&tag=nrjc-21&linkId=a2db42f7b4bdf10cafaafa3bb9120940 ''Gases, page 12, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Gases, page 18, Gateway GCSE Chemistry, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/1782945687/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945687&linkCode=as2&tag=nrjc-21&linkId=9a598e52189317a20311d7a632747bc9 ''Gases, pages 14, 17, 18, Gateway GCSE Physics; The Revision Guide, CGP, OCR '']
:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Gases, pages 82, 152, 155, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Gases; atmosphere, pages 252-257, Gateway GCSE Chemistry, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Gases; calculating amounts, pages 170-171, Gateway GCSE Chemistry, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Gases; changing state, pages 76-77, Gateway GCSE Chemistry, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Gases; collecting, pages 128, 222, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Gases; collection, pages 265, 267, Gateway GCSE Chemistry, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Gases; detection, pages 146-147, 265, 267, Gateway GCSE Chemistry, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/1782945687/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945687&linkCode=as2&tag=nrjc-21&linkId=9a598e52189317a20311d7a632747bc9 ''Gases; pressure in, pages 17, 18, Gateway GCSE Physics; The Revision Guide, CGP, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Gases; pressure, page 179, Gateway GCSE Chemistry, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Gases; refined crude oil, page 239, Gateway GCSE Chemistry, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Gases; volume, pages 170-171, 174, Gateway GCSE Chemistry, Oxford, OCR '']
Ellen References
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