Chemical and Physical Changes in Matter

The video reviews the unit on physical science, covering properties of matter, states of matter, and how matter changes. It explains reversible and irreversible changes, and distinguishes between physical and chemical changes with examples. The video prepares students for an assessment by summarizing key concepts learned in the unit.

What makes different materials unique from each other?

• Their location

• Their properties

• Their color

• Their size

Which state of matter takes the shape of its container?

• Plasma

• Gas

• Liquid

• Solid

What happens to a solid when it is heated?

• It becomes a gas

• It becomes a liquid

• It remains a solid

• It disappears

Which of the following is an example of a reversible change?

• Melting ice

• Cooking an egg

• Rusting metal

• Burning paper

What type of change occurs when you mix ingredients to make batter?

• Chemical change

• No change

• Physical change

• Irreversible change

What happens to the properties of a material during a chemical change?

• They disappear

• They change into new properties

• They remain the same

• They become reversible

Which of the following is a chemical change?

• Freezing water

• Burning wood

• Boiling water

• Crumpling paper

What is an example of an irreversible change?

• Boiling water

• Freezing water

• Burning a candle

• Melting ice

What question should you ask to determine if a change is reversible?

• Can we change it back?

• Is it heavier?

• Is it still the same material?

• Does it have a new color?

What type of change is cooking an egg?

• Physical change

• Chemical change

• No change

• Reversible change