Prop of Chem Test

Which of these is NOT evidence of a chemical reaction?

• giving off heat

• producing smell

• tearing paper

• bubbles form

Which of these is a physical change?

• fireworks exploding

• dissolving sugar in water

• digesting food

• burning a match

Which of these is NOT an example of matter?

• Light

• Oxygen

• Feathers

• Water

Flammability is a......

• chemical property

• physical property

• both chemical and physical

• neither chemical or physical

What characteristics of a substance can be seen without changing the identity of the substance

• chemical property

• physical property

• both properties

• neither properties

While cooking dinner, Kelly places a pot full of water on the stove to heat up. Kelly notices that small bubbles start to appear at the bottom after three minutes. What type of property of water is Kelly observing?

• Kelly is observing a chemical property because the water is changing to steam.

• Kelly is observing a chemical property because the water is reacting with the pot.

• Kelly is observing a physical property because the water is changing to steam.

• Kelly is observing a physical property because the water is reacting with the pot.

Which is a way that a piece of paper can go through a chemical change?

• fold the paper in half
• soak the paper in water
• burn the paper with fire
• cut the paper with scissors

Grass growing in a lawn

• Chemical Change
• Physical Change

How many different types of atoms are there in the following molecule?

• 7

• 6

• 3

• 8

A __ mixture is a mixture in which the composition is not uniform throughout the mixture.

• element

• homogenous

• heterogenous

• compound