Chemical and Physical Changes Mini-Flashcard

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What is a chemical change?

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A chemical change is a process where substances combine or break apart to form new substances with different properties.

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What is a physical change?

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A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

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What is the law of conservation of mass?

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The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

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What is an exothermic reaction?

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An exothermic reaction is a chemical reaction that releases energy, usually in the form of heat or light.

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What is an endothermic reaction?

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An endothermic reaction is a chemical reaction that absorbs energy from its surroundings, usually in the form of heat.

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What is a balanced chemical equation?

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A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved.

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What is a reactant?

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A reactant is a substance that undergoes a chemical change in a reaction.

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What is a product?

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A product is a substance that is formed as a result of a chemical reaction.

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What is a physical property?

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A physical property is a characteristic of a substance that can be observed or measured without changing its chemical identity.

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What is a chemical property?

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A chemical property is a characteristic of a substance that describes its ability to undergo a specific chemical change.