Question

Suppose that a substance in a beaker is heated over a burner in a science lab. Which observation would most likely indicate that a chemical change has occurred in the substance?
If the substance is a liquid or solid, an increase in temperature would indicate a chemical change.
If the substance is a liquid, a change of some of the liquid to gaseous form would indicate a chemical change.
If the substance is a solid, a change of some of the solid to liquid form would indicate a chemical change.
If the substance is a liquid or solid, production of an odor would indicate a chemical change

Answer 1

Answer:

D

Explanation:

the production of an odor would indicate that the heat ignited a chemical reaction

Answer 2

The correct answer to the question is:

If the substance is a liquid or solid, production of an odor would indicate a chemical change

A chemical change is a change which is not easily reversible and in which a new substance. For example burning of substance, decay of substance etc

A physical change is a change which is easily reversible and no new substance is form. For example change of states of matter.

With the above information in mind, we can see that the correct answer to the question is: If the substance is a liquid or solid, production of an odor would indicate a chemical change

All other options represent a physical state.

Learn more: brainly.com/question/11974489