Chemistry III Check-in

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What is an exothermic reaction?

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An exothermic reaction is a chemical reaction that releases heat to its surroundings.

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What is an endothermic reaction?

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An endothermic reaction is a chemical reaction that absorbs heat from its surroundings.

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What are reactants in a chemical equation?

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

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What are products in a chemical equation?

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

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What does the Law of Conservation of Matter state?

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The Law of Conservation of Matter states that matter is never created or destroyed in a chemical reaction.

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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 are coefficients in a chemical equation?

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Coefficients are the numbers placed in front of the reactants and products in a chemical equation to indicate the number of molecules involved.

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What are subscripts in a chemical formula?

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Subscripts are the small numbers written after an element in a chemical formula that indicate the number of atoms of that element in a molecule.

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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.