GCSE Chemistry – Chemical equations

Last updated: 11/04/2020
WJEC GCSE Science – Double science foundation The nature of substances and chemical reactions GCSE Chemistry – Chemical equations

Learning Objectives

-I can represent a reaction using a word equation
-I can represent a reaction using a balanced symbol equation

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  1. Current
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  3. Answered

  1. What is a chemical equation?

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  2. How many state symbols are there?

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  3. What is the state symbol for a solid?

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  4. What is the state symbol for a liquid?

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  5. What is the state symbol for a gas?

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  6. What is the state symbol for an aqueous solution?

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  7. What is an aqueous solution?

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  8. What are reactants?

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  9. What are products?

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  10. How many types of chemical equations can be written?

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  11. Which of the following is a form of writing a chemical equation?

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  12. Which of the following is a form of writing a chemical equation?

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  13. What do symbol equations help to do?

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  14. What does it mean when an equation is balanced?

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  15. What can not be changed when balancing a chemical equation?

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  16. What does it mean when an equation is unbalanced?

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  17. What is it called when the total mass of the products form in a reaction is the same as the total mass of the reactants?

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  18. What can atoms not be in a reaction?

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  19. What can atoms not be in a reaction?

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  20. Which part of a reaction comes first?

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  21. Which part of a reaction comes last?

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  22. What is the same for a chemical equation?

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  23. Balance the following equation; CO2_2 + H2_2O → C6_6H12_{12}O6_6 + O2_2.

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  24. Balance the following equation; H2_2 + O2_2 → H2_2O.

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  25. Balance the following equation; H2_2 + Cl2_2 → HCl.

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