Law of conservation of matter video flashcard

Front

What is the Law of Conservation of Mass?

Back

The principle that states that matter cannot be created or destroyed in a closed system; the total mass remains constant during any physical or chemical change.

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Why is it important to balance chemical equations?

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Balancing chemical equations is essential to follow the law of conservation of matter, ensuring that the number of atoms for each element is the same on both sides of the equation.

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What happens to the mass of a substance during a phase change?

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The mass remains constant; it does not change during phase changes such as melting, freezing, or boiling.

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How does rusting affect the mass of a metal object?

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When a metal like copper rusts, it combines with oxygen from the air, resulting in an increase in mass due to the addition of oxygen.

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What is an example of the Law of Conservation of Matter in everyday life?

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When you eat food, the mass of the food is converted into energy and matter that your body uses, demonstrating that matter is transformed but not lost.

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If water is boiled into steam, what happens to its mass?

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The mass of the steam is equal to the mass of the water before boiling, as matter is conserved.

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What is a closed system in the context of the Law of Conservation of Mass?

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A closed system is one where no matter enters or leaves, allowing for the observation of conservation of mass during reactions.

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Can matter be created or destroyed in a chemical reaction?

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No, according to the Law of Conservation of Mass, matter cannot be created or destroyed; it only changes form.

Front

What is an example of a physical change that demonstrates conservation of mass?

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Melting ice into water; the mass of the ice remains the same when it melts.

Front

What is the significance of the mass of reactants and products in a chemical reaction?

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The total mass of the reactants must equal the total mass of the products, illustrating the conservation of mass.