Chemical Change

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

• Cutting paper

• Sugar burning

• Freezing water

When baking soda mixes with vinegar, a chemical reaction occurs. This reactivity is an example of a _______________.

• Chemical Property

• Physical Property

A green powder is heated & a gas is given off while it turns to a black solid. This describes

• 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

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.

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

• Chemical change

• Physical change

• Change in State

• Change in appearance only.

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

• Change in color

• Change in shape, size

• Release of energy (Heat)

• Formation of an odor (Smell)

In physical changes, substances might change in __________ but not in __________.

• appearance, composition
• volume, state of matter
• texture, color
• weight, mass