Difference between revisions of "Chromium"
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==Key Stage 3== | ==Key Stage 3== | ||
===Meaning=== | ===Meaning=== | ||
| − | [[File: | + | [[File:ChromiumSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Chromium]].]] |
[[Chromium]] is a [[Transition Metal|transition metal]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 24. | [[Chromium]] is a [[Transition Metal|transition metal]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 24. | ||
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: [[Chromium]] is [[ductile]]. | : [[Chromium]] is [[ductile]]. | ||
==Key Stage 4== | ==Key Stage 4== | ||
| + | [[File:CrKS4.PNG|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Chromium]].]] | ||
===Meaning=== | ===Meaning=== | ||
[[Chromium]] is a [[Transition Metal|transition metal]] [[element]], on the [[Periodic Table]], with 24 [[proton]]s in the [[Atomic Nucleus|nucleus]]. | [[Chromium]] is a [[Transition Metal|transition metal]] [[element]], on the [[Periodic Table]], with 24 [[proton]]s in the [[Atomic Nucleus|nucleus]]. | ||
| − | ===About | + | ===About Chromium=== |
====Molecular Structure==== | ====Molecular Structure==== | ||
| − | : [[Chromium]] has the [[Chemical Formula|chemical formula]] [[Chromium | | + | : [[Chromium]] has the [[Chemical Formula|chemical formula]] [[Chromium |Cr]]. |
: [[Chromium]] [[atom]]s join together in a [[Giant Metallic Structure|giant metallic structure]]. | : [[Chromium]] [[atom]]s join together in a [[Giant Metallic Structure|giant metallic structure]]. | ||
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====Atomic Structure==== | ====Atomic Structure==== | ||
: The most [[Stable Isotope|stable isotope]] of [[Chromium]] has 28 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 52. | : The most [[Stable Isotope|stable isotope]] of [[Chromium]] has 28 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 52. | ||
: [[Chromium]] is in [[Period]] 4 of the [[Periodic Table]] because it has 4 [[Electron Orbital|electron shells]]. | : [[Chromium]] is in [[Period]] 4 of the [[Periodic Table]] because it has 4 [[Electron Orbital|electron shells]]. | ||
| + | : [[Chromium]] loses [[electron]]s to form [[Positive Charge|positive]] [[Metal Ion|metal ions]]. | ||
====Properties==== | ====Properties==== | ||
| + | : [[Chromium]] forms [[Ionic Bond|ionic bonds]] with [[non-metal]]s. | ||
: [[Chromium]] is a [[metal]] [[element]] so it is a good [[Thermal Conductor|thermal conductor]] and a good [[Electrical Conductor|electrical conductor]]. | : [[Chromium]] is a [[metal]] [[element]] so it is a good [[Thermal Conductor|thermal conductor]] and a good [[Electrical Conductor|electrical conductor]]. | ||
: [[Chromium]] is a shiny [[solid]] at [[STP|standard temperature and pressure]] and has a high [[Melting Point|melting point]]. | : [[Chromium]] is a shiny [[solid]] at [[STP|standard temperature and pressure]] and has a high [[Melting Point|melting point]]. | ||
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: [[Chromium]] is [[sonorous]]. | : [[Chromium]] is [[sonorous]]. | ||
: [[Chromium]] is [[ductile]]. | : [[Chromium]] is [[ductile]]. | ||
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| + | ===References=== | ||
| + | ====AQA==== | ||
| + | |||
| + | :[https://www.amazon.co.uk/gp/product/0008158762/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158762&linkCode=as2&tag=nrjc-21&linkId=a0fffa35b3ea49a63404f6704e0df7cc ''Chromium, pages 48-9, 339-40, GCSE Chemistry; Student Book, Collins, AQA ''] | ||
Latest revision as of 11:10, 5 March 2020
Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
Chromium is a transition metal element, on the Periodic Table, with an atomic number of 24.
About Chromium
Molecular Structure
- Chromium has the chemical symbol Cr.
- Chromium atoms join together in large numbers to form a giant metal molecule.
Atomic Structure
- Chromium as 24 protons and 28 neutrons in its nucleus giving it an Atomic Number of 24 and an atomic mass of 52.
- Chromium is in Period 4 of the Periodic Table because it has 4 electron shells.
Properties
- Chromium is a metal element so it is a good thermal conductor and a good electrical conductor.
- Chromium is a shiny solid at room temperature.
- Chromium is malleable.
- Chromium is sonorous.
- Chromium is ductile.
Key Stage 4
Meaning
Chromium is a transition metal element, on the Periodic Table, with 24 protons in the nucleus.
About Chromium
Molecular Structure
- Chromium has the chemical formula Cr.
- Chromium atoms join together in a giant metallic structure.
Atomic Structure
- The most stable isotope of Chromium has 28 neutrons in its nucleus giving it an atomic mass of 52.
- Chromium is in Period 4 of the Periodic Table because it has 4 electron shells.
- Chromium loses electrons to form positive metal ions.
Properties
- Chromium forms ionic bonds with non-metals.
- Chromium is a metal element so it is a good thermal conductor and a good electrical conductor.
- Chromium is a shiny solid at standard temperature and pressure and has a high melting point.
- Chromium is malleable.
- Chromium is sonorous.
- Chromium is ductile.