Chemical Reactions Flashcards

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Chemical reaction definition

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A chemical reaction is a process where atoms are rearranged to form different substances.

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Evidence of chemical reactions

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Includes temperature changes, color changes, production of gas, formation of a precipitate, production of odor, and production of light.

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Gas production in reactions

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Formation of bubbles.

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Precipitate formation

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Formation of a solid.

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Odor production in reactions

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Indicates a chemical reaction.

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Word equations

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Use words to show reactants and products.

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Example of a skeleton equation

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H₂ + O₂ → H₂O

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Chemical equation symbol for liquid

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(l)

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Example of a synthesis reaction

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2Na + Cl₂ → 2NaCl

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Balancing chemical equations

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Requires equal number of atoms on both sides.