Warm Up (Mon 11/6)

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

Which of these is an example of a new substance being formed?

• a nail rusting
• a wall being painted
• water changing to steam
• paper being folded

Which example best describes a physical change?

• iron rusting
• charcoal burning
• an ice cube melting
• a marshmallow burning

Glass bottle that is shattered

• Chemical Change
• Physical Change

Baking soda and vinegar combine to make carbon dioxide

• Chemical Change
• Physical Change

Hydrochloric acid reacts with potassium hydroxide to produce a salt, water,and heat.

• Chemical Change
• Physical Change

Sugar dissolves in water

• Chemical Change
• Physical Change

A pellet of sodium is sliced in two

• Chemical change
• Physical Change

Grass growing in a lawn

• Chemical Change
• Physical Change

A physical change _____________ the identity of the substance.

• changes

• maintains