Physical and Chemical Reactions

An ice pack works by involving a __________ change

Which of the following 2 are chemical reactions?

• sugar dissolving in water

• water turning into steam

• burning wood

• mixing baking soda and vinegar

• tearing paper

• 1

• 2

• 3

• 4

Dissolving salt in water

• Physical Change

• Chemical Change

The smell your dog makes after eating to much people food.

• Chemical Change
• Physical Change

Which of the following does not relate to a chemical change occurring?

• Change in colour

• Change in temperature

• Expansion

• Bubbles

A copper penny turning greenish after a few years is an example of ...

• Chemical Change
• Physical Change

Is crushing a can of coke an example of a physical change?

• Yes

• No

Which of the following is not an example of a physical change occurring?

• Change in shape

• Expansion (gets bigger)/contraction (gets smaller)

• Change of state (solid, liquid, gas)

• Change in colour

The smell made from spraying perfume on yourself. 

• Chemical Change
• Physical Change