The reaction mixtures were heated to 80°C for 2 hours.

Rearrangement reactions are important in organic chemistry.

Nuclear reactions are used to generate electricity in nuclear power plants.

Chemical reactions occur when substances interact and undergo a change.

There were mixed reactions to the new policy.

Half-reactions are important in redox reactions.

Grignard reactions are commonly used in organic synthesis.

Pericyclic reactions are important in organic chemistry.

Chain reactions can have a significant impact on the outcome of a chemical reaction.

My gut reactions told me not to trust him.