Changes in Matter

What do you predict will happen to the mass of the nails after they rust, if none of the rust falls off?

What are the two main types of changes that matter can undergo?

Explain the difference between a physical change and a chemical change using examples from the slides.

List three questions you can ask yourself to determine if a change is physical, based on the slides.

Which of the following are examples of physical changes?

Which of the following best describes a chemical change, as shown in the transformation of wood to ash?

Explain how a chemical reaction leads to the formation of new substances, using the example of methane and oxygen reacting.

Which of the following are signs that a chemical change has occurred?

Select all examples that represent a chemical change from the list below.

Compare and contrast rusting, tarnishing, and oxidation as chemical changes involving metals. What do they have in common and how are they different?

Which process caused the Statue of Liberty to change color over time?

Explain why rust, tarnish, or oxidation cannot be reversed to get back the original air and water.

Which of the following are evidence of a chemical change?

Describe how baking cookies is an example of a chemical change.

Select the statement that is the best comparison of the total mass of the jar and its contents before and after the seeds sprouted to form seedlings: