Form 15: Conservation of Mass and Balancing Review Exercise

Form 15: Conservation of Mass and Balancing Review

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Form 15: Conservation of Mass and Balancing Review

In this engaging exercise, students will explore the principle of conservation of mass through interactive balancing equations, honing their skills in identifying reactants and products while balancing chemical reactions accurately. Join us to uncover the science behind the numbers and enhance your problem-solving abilities in chemistry!

Questions

  1. MultiChoice

    What happens to atoms during a chemical reaction?

  2. MultiChoice

    Which chemical principle explains why we MUST balance chemical equations?

  3. MultiChoice

    What numbers can be added or changed when balancing a chemical equation?

  4. MultiChoice

    What numbers can NEVER be changed when balancing a chemical equation?

  5. MultiChoice

    In _ H2 + O2 -> 2 H2O, what is the coefficient for H2?

  6. MultiChoice

    In 2 H2 + _ O2 -> 2 H2O, what is the coefficient for O2?

  7. MultiChoice

    In 2 H2 + O2 -> _ H2O, what is the coefficient for H2O?

  8. MultiChoice

    If 10 g of reactant A reacts with 5 g of reactant B, what is the total mass of product AB?

  9. MultiChoice

    If 20 g of AB decomposes into 16 g of A and some B, what mass of B is produced?

  10. MultiChoice

    Why does a piece of paper weigh less after burning in an open dish?

  11. MultiChoice

    Why did burning paper inside a closed glass sphere show no change in total mass?

  12. MultiChoice

    What defines a balanced chemical equation?