C1 - Hydrocarbons (Alkenes) 0.0 / 5 ? ChemistryAcids, bases and saltsGCSEOCR Created by: RachelcfxCreated on: 06-05-16 22:19 How are single covalent bonds formed? When two atoms share a pair of electrons. 1 of 8 What is a double bond? When two atoms share two pairs of electrons. 2 of 8 A hydrogen atom needs _ electrons in its outer shell 2 3 of 8 A carbon atom needs _ electrons in its outer shell... 8 4 of 8 What makes an Alkene an Alkene? They have a C=C double bond. 5 of 8 What is an unsaturated compound? A compound that has at least one double covalent bond. 6 of 8 Give examples of alkenes... ethENE, propENE, butENE. 7 of 8 What happens when alkenes react with bromine water? Bromine water decolourises. 8 of 8
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