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)
monitor for the release of a gas conduct a test to determine the chemical makeup of the molecules test for the release of heat observe a color change
1 answer
All of the options mentioned are reliable ways to observe that a chemical change has occurred when two substances come in contact with one another. However, the most immediate and easily noticeable observation would be to observe a color change.