Which of the following examples is a sign

that a chemical change is occurring?

A. the substance seems to have disappeared

B. the state of the matter has changed

C. the production of heat, light, and smoke

Question

Chemistry

Nancy Holloway

1 July, 19:21

Which of the following examples is a sign

that a chemical change is occurring?

A. the substance seems to have disappeared

B. the state of the matter has changed

C. the production of heat, light, and smoke

+1

Answers (2)

Know the Answer?

Kira Cervantes · Answer 1

The answer is C. Heat is an indicator that energy is being released, which occurs during a chemical change. Light and smoke can also be factors

Kyla Pierce · Answer 2

Answer: C. The production of heat, light and smoke

Explanation: In a chemical reaction taking place several evidence are the presence of light emission and heat is generated in the reaction. Smoke is also an indication when a chemical reaction is happening such as combustion reaction.

Which of the following examples is a signthat a chemical change is occurring?A. the substance seems to have disappearedB. the state of the matter has changedC. the production of heat, light, and smoke

Which of the following examples is a sign

that a chemical change is occurring?

A. the substance seems to have disappeared

B. the state of the matter has changed

C. the production of heat, light, and smoke