Ciara's bike has rusted, which means that the iron in the metal changed to rust. What has occurred?

Which of the following summarizes a change that takes place as a solid turns to a liquid?

How do chemical weathering and deposition contribute to the formation of the features shown here?

How can you tell whether a change in matter is caused by a chemical reaction?

When the color, smell, and taste of the mixture changed, I knew a chemical ___ had taken place.

What is the process that changes one set of chemicals into another set of chemicals?

Which of the following physical changes shows a change in a substance's state of matter?

A change to the physical properties of a substance, like a change in size.

A physical change _____ change the composition or identity of the substance.