C6 - Flashcards in GCSE Science

1. What lowers the amount of energy needed for a successful collision? (1, 8)
5. Starting materials are called? (9)
6. You can detect an acid or alkali using... (6, 5)
10. What changes release energy usually as heat because the products have less energy than the reactants did? (10)

2. New substances are called? (8)
3. Bulk chemicals are made on a... (5, 5)
4. What can be used to calculate the concentration of an acid by finding out how much alkali is needed to neutralise it? (9)
7. Actual yield / Theoretical yield x 100 = (10, 5)
8. What type of salt does hydrochloric acid produce? (8, 5)
9. What shows the mass of one atom in comparison to the mass of other atoms? (8, 6, 4)

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