Chemistry: C1 0.0 / 5 ? ChemistryAtoms and compoundsGCSEAQA Created by: Chloe57Created on: 07-04-19 15:19 What are the substances that react together in a chemical reaction called? Reactants 1 of 7 Word equation for Copper metal reacting with oxygen Copper + oxygen → Copper oxide 2 of 7 Why is the total mass of the reactants in a chemical reaction always equal to the total mass of the products? Conservation of mass 3 of 7 Define the term 'Mixture' Two or more elements not chemically bonded 4 of 7 What technique is used to to separate components in food colouring? Chromatography 5 of 7 What technique could be used to extract pure salt from salt and water solution? crystallisation 6 of 7 What property allows oxygen and nitrogen to be extracted using fractional distillation? They have different boiling points 7 of 7
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