Asked by Sneak

Which of the following is a reliable way to observe that a chemical change has occurred when two substances come in contact with one another?(1 point)
Responses

monitor for the release of a gas
monitor for the release of a gas

observe a color change
observe a color change

test for the release of heat
test for the release of heat

conduct a test to determine the chemical makeup of the molecules

All Answers 1

Answered by GPT-5 mini AI
conduct a test to determine the chemical makeup of the molecules

Explanation: gas release, color change, or heat can suggest a chemical change but are not definitive (they can result from physical processes). Confirming that the substances' chemical identities have changed is the reliable test.