Question

7. In a chemical reaction, which event ALWAYS occurs as the reaction proceeds?
a. the rearrangement of electrons to break or form chemical bonds
b. the release of energy to the environment
c. the absorption of energy from the environment
d. a change in total mass​

Answer 1

Answer: B

Explanation:

Answer 2

Chemical reaction represents the chemical changes in a reactant that results in a product. As the reaction proceeds, the electron rearranges themselves to form or break bonds. Thus, option a is correct.

What is a chemical reaction?

A chemical reaction is a conversion process where the reactant undergoes chemical changes to get converted into one or more products that are different and new.

The product or the new substance is formed as a result of the electron rearrangement that leads to the splitting or formation of the bonds among the reactants.

Some chemical reactions absorb heat from surroundings, while some releases heat into the environment. But in a reaction, the mass remains conserved.

Therefore, option a. the electron rearranges to split and create new bonds is correct for a chemical reaction.

Learn more about the chemical reaction here:

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