Alkene - Revision history

Ellen References at 10:25, 30 November 2019

2019-11-30T10:25:47Z

NRJC at 11:09, 29 October 2019

2019-10-29T11:09:10Z

NRJC: /* AQA */

2019-10-27T19:02:09Z

‎AQA

NRJC at 18:09, 27 October 2019

2019-10-27T18:09:10Z

NRJC: /* About Alkenes */

2019-06-07T13:06:11Z

‎About Alkenes

NRJC: /* About Alkenes */

2019-06-07T13:05:57Z

‎About Alkenes

NRJC at 13:02, 7 June 2019

2019-06-07T13:02:54Z

NRJC at 12:54, 7 June 2019

2019-06-07T12:54:38Z

NRJC at 12:54, 7 June 2019

2019-06-07T12:54:16Z

NRJC: /* Key Stage 4 */

2019-04-06T15:23:03Z

‎Key Stage 4

← Older revision		Revision as of 10:25, 30 November 2019
Line 129:		Line 129:
	:[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 ''Alkenes, pages 256, 262, 263, 285-287, GCSE Chemistry, 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 ''Alkenes, pages 256, 262, 263, 285-287, GCSE Chemistry, CGP, 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 ''Alkenes; reactions, pages 174-175, GCSE Chemistry, Pearson, 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 ''Alkenes; reactions, pages 174-175, GCSE Chemistry, Pearson, Edexcel '']
		+
		+	====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 ''Alkenes, page 143, 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 ''Alkenes, pages 232-233, 240-241, 242-243, Gateway GCSE Chemistry, Oxford, 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 ''Alkenes, pages 88, 90, 94, GCSE Chemistry; The Revision Guide, CGP, OCR Gateway '']

← Older revision		Revision as of 11:09, 29 October 2019
Line 121:		Line 121:
	:[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 ''Alkenes; formation in cracking reaction, page 176, GCSE Chemistry, 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 ''Alkenes; formation in cracking reaction, page 176, GCSE Chemistry, 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 ''Alkenes; reactions of, pages 178-80, GCSE Chemistry, 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 ''Alkenes; reactions of, pages 178-80, GCSE Chemistry, Hodder, AQA'']
		+
		+	====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 ''Alkenes, page 275, GCSE Combined Science, Pearson 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 ''Alkenes, page 88, 90, 98, 99, GCSE Chemistry; The Revision Guide, 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 ''Alkenes, pages 138, 140, GCSE Combined Science; The Revision Guide, CGP, 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 ''Alkenes, pages 161, 173, GCSE Chemistry, Pearson, 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 ''Alkenes, pages 256, 262, 263, 285-287, GCSE Chemistry, CGP, 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 ''Alkenes; reactions, pages 174-175, GCSE Chemistry, Pearson, Edexcel '']

@@ Line 112: / Line 112: @@
 ===References===
 ====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=ad276ad49df77ab4b40ab4fd0fe09667 ''Alkenes, page 149, 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=ad276ad49df77ab4b40ab4fd0fe09667 ''Alkenes, page 149, GCSE Combined Science; The Revision Guide, CGP, 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=9e29fad914244909903e5e93f8a01d38 ''Alkenes, page 77-80, GCSE Chemistry; The Revision Guide, CGP, 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=9e29fad914244909903e5e93f8a01d38 ''Alkenes, page 77-80, GCSE Chemistry; 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 ''Alkenes, pages 147, 148, 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 ''Alkenes, pages 147, 148, 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 ''Alkenes, pages 154-155, 158-159, 168, 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 ''Alkenes, pages 154-155, 158-159, 168, GCSE Chemistry; Third Edition, Oxford University Press, 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 ''Alkenes, pages 177-8, GCSE Chemistry, 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 ''Alkenes, pages 177-8, GCSE Chemistry, Hodder, 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 ''Alkenes, pages 189, 195, GCSE Combined Science Trilogy; Chemistry, CGP, 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 ''Alkenes, pages 189, 195, GCSE Combined Science Trilogy; Chemistry, 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 ''Alkenes, pages 227, 230-237, GCSE Chemistry, 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 ''Alkenes, pages 227, 230-237, GCSE Chemistry, CGP, 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 ''Alkenes; formation in cracking reaction, page 176, GCSE Chemistry, 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 ''Alkenes; formation in cracking reaction, page 176, GCSE Chemistry, 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 ''Alkenes; reactions of, pages 178-80, GCSE Chemistry, 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 ''Alkenes; reactions of, pages 178-80, GCSE Chemistry, Hodder, AQA'']

← Older revision		Revision as of 18:09, 27 October 2019
Line 109:		Line 109:
	: [[Butene]] + [[Steam]] ⇌ [[Butanol]]		: [[Butene]] + [[Steam]] ⇌ [[Butanol]]
	: C<sub>4</sub>H<sub>8</sub>(g) + H<sub>2</sub>O(g) ⇌ C<sub>4</sub>H<sub>9</sub>OH(l)		: C<sub>4</sub>H<sub>8</sub>(g) + H<sub>2</sub>O(g) ⇌ C<sub>4</sub>H<sub>9</sub>OH(l)
		+
		+	===References===
		+	====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=ad276ad49df77ab4b40ab4fd0fe09667 ''Alkenes, page 149, GCSE Combined Science; The Revision Guide, CGP, 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=9e29fad914244909903e5e93f8a01d38 ''Alkenes, page 77-80, GCSE Chemistry; 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 ''Alkenes, pages 147, 148, 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 ''Alkenes, pages 154-155, 158-159, 168, GCSE Chemistry; Third Edition, Oxford University Press, 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 ''Alkenes, pages 177-8, GCSE Chemistry, Hodder, 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 ''Alkenes, pages 189, 195, GCSE Combined Science Trilogy; Chemistry, 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 ''Alkenes, pages 227, 230-237, GCSE Chemistry, CGP, 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 ''Alkenes; formation in cracking reaction, page 176, GCSE Chemistry, 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 ''Alkenes; reactions of, pages 178-80, GCSE Chemistry, Hodder, AQA']

@@ Line 10: / Line 10: @@
 : [[Alkene Test|Testing for '''alkenes''']] can be done by adding them to [[Bromine Water]]. If the [[Bromine Water]] turns from orange to colourless, then an [[alkene]] is present. During this test the [[Bromine]] [[Chemical Reaction|react]]s with the [[alkene]] to form a [[Bromoalkane]].
 : [[Ethene]] + [[Bromine]] → [[Dibromoethane]]
-: <math>C_2H_4 + Br_2 → C_2H_4Br_2</math>
+<math>C_2H_4 + Br_2 → C_2H_4Br_2</math>
 ===Examples===

@@ Line 53: / Line 53: @@
 In the [[Complete Combustion|complete combustion]] of [[alkene]]s the only [[product]]s are [[Carbon Dioxide]] and [[Water]].
 : [[Ethene]] + [[Oxygen]] → [[Carbon Dioxide]] + [[Water]]
-: <chem>C2H4 + 3O2 -> 2CO2 + 2H2O</chem>
+: C<sub>2</sub>H<sub>4</sub> + 3O<sub>2</sub> → 2CO<sub>2</sub> + 2H<sub>2</sub>O
 : [[Propene]] + [[Oxygen]] → [[Carbon Dioxide]] + [[Water]]
-: <chem>2C3H6 + 9O2 -> 6CO2 + 6H2O</chem>
+: 2C<sub>3</sub>H<sub>6</sub> + 9O<sub>2</sub> → 6CO<sub>2</sub> + 6H<sub>2</sub>O
 : [[Butene]] + [[Oxygen]] → [[Carbon Dioxide]] + [[Water]]
-: <chem>C4H8 + 6O2 -> 4CO2 + 4H2O</chem>
+: C<sub>4</sub>H<sub>8</sub> + 6O<sub>2</sub> → 4CO<sub>2</sub> + 4H<sub>2</sub>O
 =====Incomplete Combustion=====
@@ Line 66: / Line 66: @@
 : [[Ethene]] + [[Oxygen]] → [[Soot]] + [[Water]]
-: <chem>C2H4 + O2 -> 2C + 2H2O</chem>
+: C<sub>2</sub>H<sub>4</sub> + O<sub>2</sub> → 2C + 2H<sub>2</sub>O
 : [[Ethene]] + [[Oxygen]] → [[Carbon Monoxide]] + [[Water]]
-: <chem>C2H4 + 2O2 -> 2CO + 2H2O</chem>
+: C<sub>2</sub>H<sub>4</sub> + 2O<sub>2</sub> → 2CO + 2H<sub>2</sub>O
 : [[Ethene]] + [[Oxygen]] → [[Soot]] + [[Carbon Monoxide]] + [[Water]]
-: <chem>2C2H4 + 3O2 -> 2C + 2CO + 4H2O</chem>
+: 2C<sub>2</sub>H<sub>4</sub> + 3O<sub>2</sub> → 2C + 2CO + 4H<sub>2</sub>O
 ====Reaction with Halogens====
@@ Line 78: / Line 78: @@
 : [[Ethene]] + [[Chlorine]] → Dichloroethane
-: <chem>C2H4 + Cl2 -> C2H4Cl2</chem>
+: C<sub>2</sub>H<sub>4</sub> + Cl<sub>2</sub> → C<sub>2</sub>H<sub>4</sub>Cl<sub>2</sub>
 : [[Propene]] + [[Bromine]] → Dibromopropane
-: <chem>C3H6 + Br2 -> C3H6Br2</chem>
+: C<sub>3</sub>H<sub>6</sub> + Br<sub>2</sub> → C<sub>3</sub>H<sub>6</sub>Br<sub>2</sub>
 : [[Butene]] + [[Iodine]] → Diiodobutane
-: <chem>C4H8 + I2 -> C4H8I2</chem>
+: C<sub>4</sub>H<sub>8</sub> + I<sub>2</sub> → C<sub>4</sub>H<sub>8</sub>I<sub>2</sub>
 ====Reaction with Hydrogen====
@@ Line 90: / Line 90: @@
 : [[Ethene]] + [[Hydrogen]] → [[Ethane]]
-: <chem>C2H4 + H2 -> C2H6</chem>
+: C<sub>2</sub>H<sub>4</sub> + H<sub>2</sub> → C<sub>2</sub>H<sub>6</sub>
 : [[Propene]] + [[Hydrogen]] → [[Propane]]
-: <chem>C3H6 + H2 -> C3H8</chem>
+: C<sub>3</sub>H<sub>6</sub> + H<sub>2</sub> → C<sub>3</sub>H<sub>8</sub>
 : [[Butene]] + [[Hydrogen]] → [[Butane]]
-: <chem>C4H8 + H2 -> C4H10</chem>
+: C<sub>4</sub>H<sub>8</sub> + H<sub>2</sub> → C<sub>4</sub>H<sub>10</sub>
 ====Reaction with Steam====
@@ Line 102: / Line 102: @@
 : [[Ethene]] + [[Steam]] ⇌ [[Ethanol]]
-: <chem>C2H4(g) + H2O(g) <=> C2H5OH(l)</chem>
+: C<sub>2</sub>H<sub>4</sub>(g) + H<sub>2</sub>O(g) ⇌ C<sub>2</sub>H<sub>5</sub>OH(l)
 : [[Propene]] + [[Steam]] ⇌ [[Propanol]]
-: <chem>C3H6(g) + H2O(g) <=> C3H7OH(l)</chem>
+: C<sub>3</sub>H<sub>6</sub>(g) + H<sub>2</sub>O(g) ⇌ C<sub>3</sub>H<sub>7</sub>OH(l)
 : [[Butene]] + [[Steam]] ⇌ [[Butanol]]
-: <chem>C4H8(g) + H2O(g) <=> C4H9OH(l)</chem>
+: C<sub>4</sub>H<sub>8</sub>(g) + H<sub>2</sub>O(g) ⇌ C<sub>4</sub>H<sub>9</sub>OH(l)

@@ Line 8: / Line 8: @@
 : [[Alkene]]s are long chains of [[Carbon]] [[atom]]s [[Covalent Bond|covalently bonded]] together with [[Double Bond|double]] and [[Single Bond|single bonds]] and [[Hydrogen]] [[atom]]s taking the remaining [[Chemical Bond|bonds]].
 : [[Alkene]]s are referred to as [[Unsaturated Hydrocarbon|unsaturated hydrocarbons]] because the [[Double Bond|double bond]] means it is not [[Saturated Hydrocarbon|saturated]] (full) with [[Hydrogen]] [[atom]]s.
-: [[Alkene Test|Testing for '''alkenes''']] can be done by adding them to [[Bromine Water]]. If the [[Bromine Water]] turns from orange to colourless, then an [[alkene]] is present. During this test the [[Bromine]] [[Chemical Reaction|react]]s with the [[alkene]] to form a [[Dibromoalkane]].
+: [[Alkene Test|Testing for '''alkenes''']] can be done by adding them to [[Bromine Water]]. If the [[Bromine Water]] turns from orange to colourless, then an [[alkene]] is present. During this test the [[Bromine]] [[Chemical Reaction|react]]s with the [[alkene]] to form a [[Bromoalkane]].
 : [[Ethene]] + [[Bromine]] → [[Dibromoethane]]
 : <chem>C2H4 + Br2 -> C2H4Br2</chem>