A piece of limestone erodes due to acid rain. this process can be best described as a

Which of the following is a clue that a chemical change has taken place?

The oxidation of haircolor is an example of a _____.

Which statement best describes evidence that a chemical reaction occurs as a cake bakes?

Which of the following is an example that includes evidence of a chemical change?

Acid rain hits a statue. Over time holes are formed in the statue. This is an example of

If two substances are mixed and a new substance is formed, what type of change is it?

Which of the following is an indication that a substance has undergone a chemical change?

What type of change occurs when water changes from a solid to a liquid?