Physical and Chemical Change

When does a physical change occur?

• When molecules combine to form a compound

• When a new element is created

• When size, shape, or state of matter changes

• When elements combine to form a molecule

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which type of change can be reversed?

• A physical change

• A chemical change

• A molecular change

• A electric change

Which of the following would cause the molecules in matter to change?

• moderate climate

• extreme heat

• pressure

• motion

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If a substance changes color, what has most likely happened?

• A chemical change has taken place

• A physical change has taken place

• A pressurized change has taken place

• None of the above

Tags

NGSS.MS-PS1-2

Stepping on a bag of potato chips would cause which type of change?

• mechanical

• thermal

• physical

• chemical

Which of the following is a clue that a chemical change has taken place?

• A gas forms when the change takes place

• substance is smaller than it was before the change took place

• The substance has been shaken up

• The substance looks the same as it did before the changes took place

Tags

NGSS.MS-PS1-2

What is the difference between a physical change and a chemical change?

• A physical change can only occur in liquids, and a chemical change can occur in a solid, a liquid, or a gas.

• A physical change is when the size, shape, or state of matter changes, and a chemical change is when the molecules of matter change to form a new substance.

• A physical change is when the molecules of matter change to form a new substance, and a chemical change is when the size, shape, or state of matter changes.

• A physical change can occur in a solid, a liquid, or a gas, and a chemical change can only occur in a liquid.

Tags

NGSS.MS-PS1-4