What happens to the atoms molecules of a substance during a chemical reaction?

In a chemical reaction, reactants react with each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products. This is what happens to atoms and molecules in a chemical reaction.

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acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.