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13 August, 13:34

What kinds of changes occur during chemical reactions, and how do these changes affect the atoms and masses of the reactants and products?

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  1. 13 August, 15:37
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    changes that happen during a chemical reaction:

    Change of odor. Change of color (for example, silver to reddish-brown when iron rusts). Change in temperature or energy, such as the production (exothermic) or loss (endothermic) of heat.

    how they affect:

    In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
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