Physical and Chemical Changes

Which of the following is an example of physical change?

• Mixing baking soda and vinegar together, and this causes bubbles and foam.

• A glass cup falls from the counter and shatters on the ground.

• Lighting a piece of paper on fire and the paper burns up and leaves ashes.

• Baking a birthday cake for your mother.

Which of the following is an example of chemical change?

• Filling up a balloon with hot air.

• Taking a glass of water and freezing it by placing it in the freezer.

• A plant collecting sunlight and turning it into food.

• Your dog ripping up your homework.

Which change can be reversed?

• Chemical Change

• Physical Change

• Both a physical and chemical change

• Neither a physical or chemical change

When a new substance is formed with different properties than the original substance it is called a

• Chemical Change

• Physical Change

• State Change

• Energy Change

If the chemical properties of a substance remain unchanged and the appearance or shape of an substance changes it is called a

• Chemical Change

• Physical Change

• Both a physical and chemical change

• Neither a physical or chemical change

Which is an example of a physical change?

• Metal rusting

• Silver tarnishing

• Water boiling

• Paper burning

What characteristic best describes what happen during a physical change?

• Composition changes

• Composition stays the same

• Form stays the same

• Mass is lost

Which is an example of chemical change?

• Water freezes

• Wood is cut

• Bread is baked

• Wire is bent

Which is not a clue that could indicate a chemical change?

• Change in color

• Change in shape

• Change in energy

• Change in Odor

The Law of Conservation of Mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. What property stays the same during physical and chemical changes?

• density

• shape

• mass

• Arrangement of particle