Chemical Reaction

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What is a chemical reaction?

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A process in which substances (reactants) undergo a transformation to form new substances (products).

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What are reactants in a chemical equation?

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Substances that are present before the chemical reaction occurs, located on the left side of the equation.

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What are products in a chemical equation?

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Substances that are formed as a result of a chemical reaction, located on the right side of the equation.

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What is a balanced chemical equation?

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An equation where the number of atoms for each element is the same on both sides, following the law of conservation of mass.

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What is a coefficient in a chemical equation?

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A number placed before a chemical formula to indicate how many molecules or moles of that substance are involved in the reaction.

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What is a subscript in a chemical formula?

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A small number written after an element symbol that indicates the number of atoms of that element in a molecule.

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What is an endothermic reaction?

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

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What is an exothermic reaction?

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

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What is a synthesis reaction?

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A type of chemical reaction where two or more reactants combine to form a single product.

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What is a decomposition reaction?

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A type of chemical reaction where a single compound breaks down into two or more simpler products.