There are several different indicators that a chemical change has taken place. Which of the following examples would be considered an indicator that a chemical reaction has taken place?(1 point)

Responses

A liquid freezes
A liquid freezes

A Substance has dissolved
A Substance has dissolved

Heat is given off after mixing two substances
Heat is given off after mixing two substances

The shape of paper changes as it is cut

1 answer

Heat is given off after mixing two substances