Chemical Reactions and Changes

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What is a chemical change?

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A chemical change is a process where substances transform into different substances with new chemical and physical properties.

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What are indicators of a chemical change?

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Indicators include color change, temperature change, gas production, formation of a precipitate, and change in properties.

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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 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 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 a catalyst?

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A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.

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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 double replacement reaction?

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A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds.

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What is a synthesis reaction?

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A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex substance.