Physical Changes

Physical Changes

Multiple Choice

What are the three states of matter?

• gas, liquid, mass

• solid, liquid, gas

• mass, solid, magnet

• density, volume, mass

Multiple Choice

An example of a physical property is...

• Density

• Rust

• Atoms

• Elements

Learning Objectives

• Define physical change.

• Give examples of physical change.

Multiple Choice

What kind of change occurs if matter changes in amount, size, or shape?

• substance change

• physical change

• chemical change

• elemental change

Physical Change

• Change to matter in which some properties of the material change, but the identify of the matter does not change.

• For example, melting (solid to a liquid) is an example of a physical change.

• Physical changes can be reversible (they can be undone) or irreversible (they cannot be undone)

Multiple Choice

What is the example of the physical change?

• Burning firewood

• Rotting Banana

• Pencil breaking

Open Ended

Can you think of two examples of physical changes that were not already mentioned?

Multiple Choice

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.

Multiple Choice

What happens when chocolate is left in a hot car?

• it melts
• it changes shape
• it changes from a solid to a liquid
• all of the above

Multiple Choice

When we cut a piece of paper into triangles, which physical properties change?

• The smell and taste

• The texture and smell

• The size and shape

Multiple Choice

When you fold a piece of paper, which physical property changes?

• The color

• The texture

• The size

Multiple Choice

Melting

• change of state from solid to liquid

• change of state from liquid to solid

Multiple Choice

A gel ice pack getting cold after you put it in the freezer for an hour.

• Chemical Change

• Physical Change