Chemical Change

A green powder is heated & a gas is given off while it turns to a black solid. This describes what type of change?

• Physical Change

• Chemical Change

• Change in State

• Change in Temperature

Which of the following could indicate that a chemical change took place?

• Change in color

• Production of Energy

• Formation of Gas

• All are correct

The formation of a solid when two liquids combine is called?

• Solidification

• Freezing

• Precipitate

• Solubility

The difference between a Physical change and a Chemical change is…

• Physical change is only a change to the outside appearance.

• Chemical change is when matter is changed into something new.

• Atoms are rearranged in chemical changes & not in physical.

• All are correct.

Identify what type of change happening in the picture below...

• Chemical Reaction

• Physical Change

• Change in State

• Change in appearance only

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

• Chemical Change

• Physical Change

• Both a physical and chemical change.

• Neither a physical or chemical change.

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

• A glass falling and shattering on the floor.

• Baking a birthday cake.

• Burning a piece of paper.

• Baking soda and vinegar mixing together.

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

• Change in color

• Change in shape

• Release of energy

• Formation of an odor

Which of the following is NOT an example of a physical change?

• crumpled paper
• pencil sharpening
• shrunken clothing
• rust

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving