Question

which of these would be considered evidence that a chemical change has occurred? select all that apply. a. a gas is produced b. a change in size occurs c. a temperature change occurs d. a different shape is formed e. a change in state of matter occurs

Explanation:

A gas production and temperature change can indicate chemical reactions. Physical changes cause size, shape, and state - of - matter changes.

Answer:

A. A gas is produced
C. A temperature change occurs