physical and chemical changes

Which of the following are examples of physical changes

• dissolving koolaid in water

• boiling water

• alka seltzer in water

• ripping paper

• melting a gold ring

Select ALL the characteristics of a physical change

• changes in appearance only

• a new substance is not created

• changes the pH level

• chemical bonds are not created or broken

• burning and fire

Peeling of orange is an irreversible ________change.

A chemical change

• changes the physical properties of an object, but does not create a new substance.

• creates a new substance and cannot be undone.

What type of change occurs when a new substance is formed that has different properties from the original substances?

• chemical change

• nuclear change

• physical change

• mutation

Which statement best describes what is happening in the images?

• a physical change

• a chemical change

• both a physical and a chemical change

• dissolving

Is this an example of a physical or chemical change?

• physical

• chemical

Which of the following best describes the change shown in this diagram?

• Physical change because a new substance was created.

• Physical change because no new substance was created.

• Chemical change because a new substance was created.

• Chemical change because no new substance was created.

Which of the follow is a physical change?

• Dissolving

• The release of heat

• Formation of gas

• Formation of precipitate

glass breaking

• physical change
• chemical change