Conservation of mass
Quiz by Oak National Academy: GCSE Combined Science AQA Higher
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6 questions
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- Q1What is the name of the starting chemicals in a reaction?productsingredientsreactants30s
- Q2Order the steps in a chemical reaction.Users link answersLinking30s
- Q3Which of the following statements explains why mass is conserved in a chemical reaction?atoms change into different elementsatoms are destroyedatoms are not lost or gained, but rearranged30s
- Q410 g of magnesium is heated in a crucible and 12g of magnesium oxide is obtained at the end of the reaction. Match the questions to the answers below about this reaction.Users link answersLinking30s
- Q5Some open system reactions where a gas is used as a reactant or formed as a product, may appear as if there has been a gain or loss in mass. Choose the reactions below where this could be the case.Users sort answers between categoriesSorting30s
- Q6Balance the following equation showing the combustion of a hydrocarbon by replacing X, Y and Z and add state symbols to show the expected state of the reactants and products. C₃H₈ + XO₂ → YCO₂ + ZH₂OX = 2 (g), Y = 2 (g) and Z = 4 (g)X = 5 (g), Y = 3 (g) and Z = 4 (l)X = 4 (g), Y = 2 (g) and Z = 2 (g)X = 5 (g), Y = 3 (g) and Z = 4 (g)X = 3 (g), Y = 3 (g) and Z = 3 (g)30s