Conservation of Mass

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction or physical change. The total mass of the reactants equals the total mass of the products.

Front

How does melting affect the mass of a substance?

Back

Melting does not change the mass of a substance. The mass remains the same before and after the melting process.

Front

What happens to the mass of water when it freezes?

Back

The mass of water remains the same when it freezes. The mass of the ice formed is equal to the mass of the water.

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If a piece of paper is torn into smaller pieces, what happens to its weight?

Back

The weight of the paper remains the same after it is torn into smaller pieces.

Front

What is the relationship between mass and weight?

Back

Mass is a measure of the amount of matter in an object, while weight is the force exerted by gravity on that mass. Weight can change with gravity, but mass remains constant.

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What happens to the total mass in a closed system during evaporation?

Back

In a closed system, the total mass remains constant during evaporation. The mass of the evaporated substance is equal to the mass of the remaining substance.

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How can you demonstrate the conservation of mass with a sealed container?

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By measuring the mass of a sealed container before and after a physical change (like freezing or melting), you can demonstrate that the mass remains constant.

Front

What is an example of a physical change that does not affect mass?

Back

Melting ice is an example of a physical change that does not affect mass; the mass of the ice remains the same when it melts into water.

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Why is it important to consider the conservation of mass in chemical reactions?

Back

Considering the conservation of mass in chemical reactions is important because it helps predict the amounts of reactants and products involved, ensuring balanced chemical equations.

Front

What is the significance of measuring mass in scientific experiments?

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Measuring mass is significant in scientific experiments because it allows for accurate calculations and helps verify the Law of Conservation of Mass.