Conservation of Mass Worksheet
Explore the fundamental principle of conservation of mass with various exercises, including multiple choice, true/false, fill-in-the-blanks, and short answer questions.
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Conservation of Mass Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. What does the Law of Conservation of Mass state?
Mass can be created or destroyed in a chemical reaction.
The total mass of reactants equals the total mass of products.
Mass is always lost as energy during a chemical reaction.
The mass of a substance changes with its state.
2. If 10 grams of hydrogen react completely with 80 grams of oxygen, what is the mass of the water produced?
70 grams
80 grams
90 grams
100 grams
3. The Law of Conservation of Mass applies to both physical and chemical changes.
True
False
4. When a log burns, the total mass of the ash, smoke, and gases produced is less than the original mass of the log.
True
False
5. In a closed system, the total mass of the reactants before a chemical reaction is equal to the total mass of the after the reaction.
6. The Law of Conservation of Mass was first formulated by in the 18th century.
7. Describe an experiment that demonstrates the Law of Conservation of Mass.
8. Observe the image below. If the initial mass of the reactants is 150g, what would you expect the final mass of the products to be, according to the Law of Conservation of Mass?
