Evidence of Chemical Reactions

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What is evidence of a chemical reaction?

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Evidence of a chemical reaction can include changes in temperature, color, formation of gas (bubbles), or formation of a precipitate.

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What happens to the mass of substances during a chemical reaction?

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The mass of substances remains the same during a chemical reaction, according to the law of conservation of mass.

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What are reactants in a chemical equation?

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Reactants are the starting substances in a chemical reaction, found on the left side of the equation.

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What are products in a chemical equation?

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Products are the substances formed as a result of a chemical reaction, found on the right side of the equation.

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What does a color change in a reaction indicate?

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A color change can indicate that a new substance has formed, suggesting a chemical reaction has occurred.

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What does the formation of bubbles in a reaction suggest?

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The formation of bubbles suggests that a gas is being produced, indicating a chemical reaction.

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What is a precipitate?

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A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.

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What is the significance of temperature change in a chemical reaction?

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A temperature change can indicate that a chemical reaction is occurring, often due to the release or absorption of energy.

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What is the role of catalysts in chemical reactions?

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Catalysts speed up chemical reactions without being consumed in the process.

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What is a chemical equation?

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A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products.