Conservation of Mass Worksheet
Explore the fundamental principle of conservation of mass through various questions and scenarios.
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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 work for calculations.
1. Which of the following statements best describes the Law of Conservation of Mass?
Mass is created during chemical reactions.
Mass is destroyed during chemical reactions.
Mass is neither created nor destroyed in a chemical reaction.
Mass can be converted into energy during chemical reactions.
2. If 10 grams of hydrogen react completely with 80 grams of oxygen to form water, what is the mass of the water produced?
70 grams
80 grams
90 grams
100 grams
1. The Law of Conservation of Mass states that in any closed system, the mass of the reactants must equal the mass of the .
2. When a chemical change occurs, the atoms are rearranged, but their total number and remain constant.
1. Explain why burning wood is an example of the Law of Conservation of Mass, even though the ash weighs less than the original wood.
2. A sealed container holds 50 grams of ice. When the ice melts completely, what will be the mass of the water in the container? Justify your answer.
1. The total mass of substances involved in a physical change always remains the same.
True
False
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