Question

which statement correctly describes a chemical reaction? reactants come out of a reaction. energy is always released. bonds between atoms break and reform. products go into a reaction.

Explanation:

• Analyze each option:
• Option 1: Reactants are the substances that go into a reaction, not come out. Products come out, so this is incorrect.
• Option 2: In chemical reactions, energy can be released (exothermic) or absorbed (endothermic), so "always released" is wrong.
• Option 3: In a chemical reaction, the bonds between atoms in reactants break, and new bonds form to create products. This is a fundamental aspect of chemical reactions.
• Option 4: Products are the substances formed from the reaction, while reactants go into the reaction. So this is incorrect.

Answer:

C. Bonds between atoms break and reform. (Note: Assuming the options are labeled A, B, C, D with the third option being C. If the original labeling is different, adjust the identifier accordingly, but the text "Bonds between atoms break and reform" is the correct choice.)