A reliable way to observe that a chemical change has occurred when two substances come in contact with one another is to monitor for the release of a gas. While observing a color change and testing for the release of heat can also indicate a chemical change, the release of gas is a strong indicator that a new substance has formed. Conducting a test to determine the chemical makeup of the molecules can confirm a change, but the observation of a gas being released is typically more immediate and indicative of a chemical reaction.
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
test for the release of heat
test for the release of heat
observe a color change
observe a color change
monitor for the release of a gas
monitor for the release of a gas
conduct a test to determine the chemical makeup of the molecules
1 answer