Chemical Reactions

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What is a chemical reaction?

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A process where substances (reactants) are transformed into new substances (products) through the breaking and forming of chemical bonds.

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What does it mean for a chemical equation to be balanced?

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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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NGSS.HS-PS1-7

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What is an inhibitor in a chemical reaction?

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A substance that slows down or stops a chemical reaction.

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NGSS.HS-PS1-5

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What is a catalyst?

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A substance that increases the rate of a chemical reaction without being consumed by lowering the activation energy.

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NGSS.HS-PS1-5

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What is activation energy?

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The minimum energy required for a chemical reaction to occur.

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What is an endothermic reaction?

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A reaction that absorbs heat from its surroundings, resulting in a temperature decrease in the surroundings.

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NGSS.HS-PS1-4

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What is an exothermic reaction?

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A reaction that releases heat to its surroundings, resulting in a temperature increase in the surroundings.

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NGSS.HS-PS1-4

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How many elements are in the compound C6H12O6?

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There are 3 different elements: Carbon (C), Hydrogen (H), and Oxygen (O).

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NGSS.MS-PS1-1

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What is the role of enzymes in chemical reactions?

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Enzymes are biological catalysts that speed up chemical reactions in living organisms by lowering the activation energy.

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NGSS.HS-PS1-5

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What is the difference between a reactant and a product?

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Reactants are the starting substances in a chemical reaction, while products are the substances formed as a result of the reaction.

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