physical/chemical properties and changes

Which of the DOES NOT indicate a chemical change/reaction is occurring?

• formation of gas/bubbles

• formation of a precipitate

• color change

• state of matter change

Chemical or Physical? Glass breaking into tiny shards?

• chemical change

• physical change

A change in a substance that only affects size, shape or state of matter

• chemical change

• physical change

• boiling point

• freezing point

Which of the following is an example of a precipitate?

• evaporation of a gas

• a chunk solid formed from two liquids combining

• a solid formed from a frozen liquid

• a liquid solution that contains two substances

A physical change can sometimes result in a color change. Which of the following situations show this?

• Milk turns yellow when it spoils.
• Dough becomes darker when it is baked into cake.
• A red candy dissolves and turns water pink.
• A match turns black when it is burned.

Density

• physical property

• chemical property

A physical change can sometimes result in a color change. Which of the following situations show this?

• Milk turns yellow when it spoils.
• Dough becomes darker when it is baked into cake.
• A red candy dissolves and turns water pink.
• A match turns black when it is burned.

Fireworks exploding is an example of a

• physical change

• chemical change

What is a physical property?

• A property that describes how something changes over time

• An observable property that describes the state of a system

• A property that describes how reactive something is

reacts with water to form a gas

• chemical property

• physical property