Chemical Formula - Revision history

Ellen References at 13:11, 1 December 2019

2019-12-01T13:11:37Z

NRJC: /* About Chemical Formulae */

2018-12-08T18:31:36Z

‎About Chemical Formulae

NRJC: /* About Chemical Formulae */

2018-12-07T17:36:05Z

‎About Chemical Formulae

NRJC: /* Examples */

2018-12-07T17:32:45Z

‎Examples

NRJC: /* Examples */

2018-12-07T17:31:52Z

‎Examples

NRJC: /* Examples */

2018-12-07T17:31:30Z

‎Examples

NRJC: /* Examples */

2018-12-07T17:30:58Z

‎Examples

NRJC: /* Examples */

2018-12-07T17:27:23Z

‎Examples

NRJC: /* Examples */

2018-12-07T17:21:54Z

‎Examples

NRJC: /* Examples */

2018-12-07T17:20:18Z

‎Examples

← Older revision		Revision as of 13:11, 1 December 2019
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	\| style="height:20px; width:200px; text-align:center;" \|[[Isopropyl Alcohol]] or [[Propan-2-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-1-ol]] but a different shape. This may be written with the [[Structural Formula\|structural formula]] '''CH<sub>3</sub>CHOHCH<sub>3</sub>''' to show where the OH group is attached.		\| style="height:20px; width:200px; text-align:center;" \|[[Isopropyl Alcohol]] or [[Propan-2-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-1-ol]] but a different shape. This may be written with the [[Structural Formula\|structural formula]] '''CH<sub>3</sub>CHOHCH<sub>3</sub>''' to show where the OH group is attached.
	\|}		\|}
		+
		+	====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 ''Chemical formulae, pages 36-37, Gateway GCSE Chemistry, Oxford, OCR '']

@@ Line 35: / Line 35: @@
 : '''Chemical Formulae''' show which [[element]]s are in a [[molecule]].
 : The number of each [[element]] in a [[molecule]] is shown with subscript after that [[element]].
 *MgBr<sub>2</sub>: [[Magnesium Bromide]] with 1 [[Magnesium]] [[atom]] and 2 [[Bromine]] [[atom]]s.
 *CO<sub>2</sub>: [[Carbon Dioxide]] with 1 [[Carbon]] [[atom]] and 2 [[Oxygen]] [[atom]]s.
 *Li<sub>2</sub>O: [[Lithium Oxide]] with 2 [[Lithium]] [[atom]]s and 1 [[Oxygen]] [[atom]].
 Some '''chemical formulae''' are written with the [[element]]s at specific points, not all grouped together, to show where different [[element]]s are [[Chemical Bond|bonded]]. This is called a [[Structural Formula|structural formula]].

@@ Line 35: / Line 35: @@
 : '''Chemical Formulae''' show which [[element]]s are in a [[molecule]].
 : The number of each [[element]] in a [[molecule]] is shown with subscript after that [[element]].
-*MgBr<sub>2</sub>: [[Magnesium Bromide]] with one [[Magnesium]] [[atom]] and two [[Bromine]] [[atom]]s.
+*MgBr<sub>2</sub>: [[Magnesium Bromide]] with 1 [[Magnesium]] [[atom]] and 2 [[Bromine]] [[atom]]s.
-*CO<sub>2</sub>: [[Carbon Dioxide]] with one [[Carbon]] [[atom]] and two [[Oxygen]] [[atom]]s.
+*CO<sub>2</sub>: [[Carbon Dioxide]] with 1 [[Carbon]] [[atom]] and 2 [[Oxygen]] [[atom]]s.
-*Li<sub>2</sub>O: [[Lithium Oxide]] with two [[Lithium]] [[atom]]s and one [[Oxygen]] [[atom]].
+*Li<sub>2</sub>O: [[Lithium Oxide]] with 2 [[Lithium]] [[atom]]s and 1 [[Oxygen]] [[atom]].
+Some '''chemical formulae''' are written with the [[element]]s at specific points, not all grouped together, to show where different [[element]]s are [[Chemical Bond|bonded]]. This is called a [[Structural Formula|structural formula]].
-Some '''chemical formulae''' are written with the [[element]]s at specific points, not all grouped together, to show where different [[element]]s are [[Chemical Bond|bonded]].
+*CH<sub>3</sub>COOH: [[Ethanoic Acid]] with 2 [[Carbon]] [[atom]]s, 2 [[Oxygen]] [[atom]]s and 4 [[Hydrogen]] [[atom]]s. This shows that one [[Carbon]] is [[Chemical Bond|bonded]] to three [[Hydrogen]] [[atom]]s while the other [[Carbon]] is [[Double Bond|double bonded]] to one [[Oxygen]] and has a [[Single Bond|single bond]] with an [[Oxygen]], which itself it bonded to a [[Hydrogen]].
-*CH<sub>3</sub>COOH: [[Ethanoic Acid]] with two [[Carbon]] [[atom]]s, two [[Oxygen]] [[atom]]s and four [[Hydrogen]] [[atom]]s. This shows that one [[Carbon]] is [[Chemical Bond|bonded]] to three [[Hydrogen]] [[atom]]s while the other [[Carbon]] is [[Double Bond|double bonded]] to one [[Oxygen]] and has a [[Single Bond|single bond]] with an [[Oxygen]], which itself it bonded to a [[Hydrogen]].
+*CH<sub>3</sub>CH<sub>2</sub>COOH: [[Propanoic Acid]] with three [[Carbon]] [[atom]]s, two [[Oxygen]] [[atom]]s and 6 [[Hydrogen]] [[atom]]s.
 ===Examples===

@@ Line 58: / Line 58: @@
 | style="height:20px; width:200px; text-align:center;" |[[Hydrochloric Acid]] [[molecule]]s have 1 [[Hydrogen]] [[atom]] and 1 [[Chlorine]] [[atom]].
 | style="height:20px; width:200px; text-align:center;" |[[Sulphuric Acid]] [[molecule]]s have 2 [[Hydrogen]] [[atom]]s, 1 [[Sulphur]] [[atom]] and 4 [[Oxygen]] [[atom]]s.
-| style="height:20px; width:200px; text-align:center;" |[[Propanol]] or [[Propan-1-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-2-ol]] but a different shape. This may be written with the [[Structural Formula|structural formula]] '''CH<sub>3</sub>⋅CH<sub>2</sub>⋅CH<sub>2</sub>OH''' to show where the OH group is attached.
+| style="height:20px; width:200px; text-align:center;" |[[Propanol]] or [[Propan-1-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-2-ol]] but a different shape. This may be written with the [[Structural Formula|structural formula]] '''CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>OH''' to show where the OH group is attached.
-| style="height:20px; width:200px; text-align:center;" |[[Isopropyl Alcohol]] or [[Propan-2-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-1-ol]] but a different shape. This may be written with the [[Structural Formula|structural formula]] '''CH<sub>3</sub>⋅CHOH⋅CH<sub>3</sub>''' to show where the OH group is attached.
+| style="height:20px; width:200px; text-align:center;" |[[Isopropyl Alcohol]] or [[Propan-2-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-1-ol]] but a different shape. This may be written with the [[Structural Formula|structural formula]] '''CH<sub>3</sub>CHOHCH<sub>3</sub>''' to show where the OH group is attached.
 |}

@@ Line 58: / Line 58: @@
 | style="height:20px; width:200px; text-align:center;" |[[Hydrochloric Acid]] [[molecule]]s have 1 [[Hydrogen]] [[atom]] and 1 [[Chlorine]] [[atom]].
 | style="height:20px; width:200px; text-align:center;" |[[Sulphuric Acid]] [[molecule]]s have 2 [[Hydrogen]] [[atom]]s, 1 [[Sulphur]] [[atom]] and 4 [[Oxygen]] [[atom]]s.
-| style="height:20px; width:200px; text-align:center;" |[[Propanol]] or [[Propan-1-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-2-ol]] but a different shape. This may be written with the [[Structural Formula|structural formula]] '''CH<sub>3</sub>⋅CH<sub>2</sub>⋅CHOH''' to show where the OH group is attached.
+| style="height:20px; width:200px; text-align:center;" |[[Propanol]] or [[Propan-1-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-2-ol]] but a different shape. This may be written with the [[Structural Formula|structural formula]] '''CH<sub>3</sub>⋅CH<sub>2</sub>⋅CH<sub>2</sub>OH''' to show where the OH group is attached.
-| style="height:20px; width:200px; text-align:center;" |[[Isopropyl Alcohol]] or [[Propan-2-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-1-ol]] but a different shape. This may be written with the [[Structural Formula|structural formula]] '''CH<sub>3</sub>⋅CH<sub>2</sub>OH⋅CH<sub>3</sub>''' to show where the OH group is attached.
+| style="height:20px; width:200px; text-align:center;" |[[Isopropyl Alcohol]] or [[Propan-2-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-1-ol]] but a different shape. This may be written with the [[Structural Formula|structural formula]] '''CH<sub>3</sub>⋅CHOH⋅CH<sub>3</sub>''' to show where the OH group is attached.
 |}

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 | style="height:20px; width:200px; text-align:center;" |'''HCl'''
 | style="height:20px; width:200px; text-align:center;" |'''H<sub>2</sub>SO<sub>4</sub>'''
-| style="height:20px; width:200px; text-align:center;" |'''C<sub>3</sub>H<sub>7</sub>OH''' or '''CH<sub>3</sub>⋅CH<sub>2</sub>⋅CHOH'''
+| style="height:20px; width:200px; text-align:center;" |'''C<sub>3</sub>H<sub>8</sub>O'''
-| style="height:20px; width:200px; text-align:center;" |'''C<sub>3</sub>H<sub>7</sub>OH''' or '''CH<sub>3</sub>⋅CHOH⋅CH<sub>3</sub>'''
+| style="height:20px; width:200px; text-align:center;" |'''C<sub>3</sub>H<sub>8</sub>O'''
 |-
 |[[File:BallandStickHydrochloricAcid.png|center|200px]]
@@ Line 56: / Line 56: @@
 |[[File:BallandStickPropan-2-ol.png|center|200px]]
 |-
-| style="height:20px; width:200px; text-align:center;" |[[Water]] has 2 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] [[atom]].
+| style="height:20px; width:200px; text-align:center;" |[[Hydrochloric Acid]] [[molecule]]s have 1 [[Hydrogen]] [[atom]] and 1 [[Chlorine]] [[atom]].
-| style="height:20px; width:200px; text-align:center;" |[[Carbon Dioxide]] has 1 [[Carbon]] [[atom]] and 2 [[Oxygen]] [[atom]]s.
+| style="height:20px; width:200px; text-align:center;" |[[Sulphuric Acid]] [[molecule]]s have 2 [[Hydrogen]] [[atom]]s, 1 [[Sulphur]] [[atom]] and 4 [[Oxygen]] [[atom]]s.
-| style="height:20px; width:200px; text-align:center;" |[[Methane]] has 1 [[Carbon]] [[atom]] and 4 [[Hydrogen]] [[atom]]s.
+| style="height:20px; width:200px; text-align:center;" |[[Propanol]] or [[Propan-1-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-2-ol]] but a different shape. The '''forumula''' may be written as '''CH<sub>3</sub>⋅CH<sub>2</sub>⋅CHOH''' to show where the OH group is attached.
-| style="height:20px; width:200px; text-align:center;" |[[Ethanol]] has 2 [[Carbon]] [[atom]]s, 6 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] [[atom]].
+| style="height:20px; width:200px; text-align:center;" |[[Isopropyl Alcohol]] or [[Propan-2-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-1-ol]] but a different shape. The '''forumula''' may be written as '''CH<sub>3</sub>⋅CHOH⋅CH<sub>3</sub>''' to show where the OH group is attached.
 |}