Law of Conservation of Mass Worksheet
Explore the Law of Conservation of Mass through various exercises and problems suitable for Grade 11 Chemistry students.
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Law of Conservation of Mass
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Read each question carefully and answer to the best of your ability. Show all work for calculations.
1. Which scientist is credited with formulating the Law of Conservation of Mass?
John Dalton
Antoine Lavoisier
Dmitri Mendeleev
Robert Boyle
2. In a chemical reaction, if 10 grams of reactant A combines with 5 grams of reactant B, what is the total mass of the products formed?
5 grams
10 grams
15 grams
Cannot be determined
3. The Law of Conservation of Mass states that mass is neither nor in a closed system.
4. In a chemical reaction, the total mass of the must equal the total mass of the .
5. Describe an everyday example that demonstrates the Law of Conservation of Mass.
6. The Law of Conservation of Mass applies only to physical changes, not chemical changes.
True
False
7. If a reaction produces a gas, the mass of the gas should be included when calculating the total mass of the products.
True
False
8. A student measures the mass of a beaker containing 50 grams of water and finds it to be 150 grams. After adding 10 grams of salt to the water and stirring until dissolved, what should the new mass of the beaker and its contents be? Assume no loss of material.
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