Chemistry Year 9 4.0 / 5 based on 1 rating ? ChemistryAll revision from yearGCSEAQA Created by: Ella2001Created on: 24-04-15 19:56 What are ALLOTROPES? How are diamond and graphite the same? When an element has 2+ forms. Diamond and graphite are allotropes of carbon. 1 of 9 Why can increasing the concentration of an acid increase the rate of a reaction? (collision theory) There are more acid particles and less water particles in the same acid volume. 2 of 9 What colour does lithium give in a flame test? Bright Red 3 of 9 What colour does sodium give in flame test? Red/Yellow/Orange 4 of 9 What colour does calcium give in a flame test? Orangey-Red/Dark Red 5 of 9 What colour does potassium give in a flame test? Lilac/Pinky-Purple 6 of 9 How is a flame test carried out? Place crystals on a nichrome wire and put in blue flame on bunsen burner. Note flame colour. 7 of 9 How is an Oxygen test carried out? Put hydrogen peroxide in boiling tube. Light splint. Add maganese dioxide powder. Blow out splint until in glows, place gas in boiling tube. 8 of 9 What is the only gas that turns indicator blue? Ammonia 9 of 9
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