Chemical and Physical Changes in Matter

What is a physical change in chemistry?

• A reaction that rearranges particles to create a new substance.

• A change in the physical properties of a substance, such as size, shape, or form.

• A process that always forms a new substance.

• A change that usually cannot be undone.

Which of the following is an example of a physical change?

• Baking a cake.

• Burning wood.

• Water evaporating into steam.

• Metal rusting.

Which of these processes is an example of a chemical change?

• Cutting a piece of cloth.

• Dissolving sugar in water.

• Melting ice into water.

• Baking cookies in an oven.

What is the primary characteristic of a chemical change?

• It only alters the size or shape of a substance.

• It involves a reaction that rearranges particles to create at least one new substance.

• It can always be easily undone.

• It changes the state of matter without forming a new substance.