Conservation of Matter Worksheet
Grade 11 Chemistry worksheet focusing on the Law of Conservation of Matter, balancing equations, and chemical reactions.
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Conservation of Matter Worksheet
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Read each question carefully and answer to the best of your ability. Show all work for calculations.
1. Which of the following best describes the Law of Conservation of Matter?
Matter can be created or destroyed, but not transformed.
Matter is conserved in chemical reactions, but not in physical changes.
Matter cannot be created or destroyed, only rearranged.
The total mass of reactants is always less than the total mass of products.
2. If 10 grams of hydrogen react completely with 80 grams of oxygen to form water, what is the mass of water produced?
10 grams
70 grams
80 grams
90 grams
3. The Law of Conservation of Matter states that the total mass of the reactants must equal the total mass of the in a closed system.
4. Balancing chemical equations is a direct application of the Law of .
5. In a physical change, the chemical identity of the substance .
6. Explain the difference between a physical change and a chemical change, and how the Law of Conservation of Matter applies to both.
7. Balance the following chemical equation:
C3H8 + O2 → CO2 + H2O
8. Write a balanced chemical equation for the reaction between sodium (Na) and chlorine gas (Cl2) to form sodium chloride (NaCl).
9. In an open system, the Law of Conservation of Matter still strictly applies to the observed mass.
True
False
10. The mass of a gas produced in a chemical reaction can be ignored when applying the Law of Conservation of Matter.
True
False