Balancing equations
Quiz by Oak National Academy: GCSE Chemistry OCR Higher
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6 questions
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- Q1What does a chemical formula like Na₂O represent?physical state of a substancenumber and ratio of each element in a substancechemical name of a substance30s
- Q2Match the terms to the correct definitions.Users link answersLinking30s
- Q3Starting with identifying the reactants and products chemical formulae, sort the steps to describe how to balance an equation.Users link answersLinking30s
- Q4A coefficient is the number placed in front of a chemical formula to balance an equation; it ______ all the atoms in the formula and shows the ratio of substances in a reaction.Users enter free textType an Answer30s
- Q5Determine which reactions are balanced.Users sort answers between categoriesSorting30s
- Q6Select the correct balanced equation for when propane (C₃H₈) completely combusts to form carbon dioxide and steam.C₃H₈ (g) + 5O₂ (g) -> 3CO₂ (g) + 4H₂O (l)2C₃H₈ (g) + 7O₂ (g) -> 6CO (g) + 8H₂O (g)C₃H₈ (g) + 5O₂ (g) -> 3CO₂ (g) + 4H₂O (g)C₃H₈ (g) + 2O₂ (g) -> 3CO₂ (g) + 4H₂O (g)C₃H₈ (g) + O₂ (g) -> CO₂ (g) + H₂O (g)30s