Physical and Chemical Changes

A physical change...

• changes the physical properties of an object, but does not create a new substance.

• creates a new substance and cannot be undone.

Tags

NGSS.MS-PS1-2

A chemical change

• changes the physical properties of an object, but does not create a new substance.

• creates a new substance and cannot be undone.

Tags

NGSS.MS-PS1-2

Is this an example of a physical or chemical change?

• physical

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Is this an example of a physical or chemical change?

• physical

• chemical

Tags

NGSS.MS-PS1-2

In which of these do particles move slowest?

• matter
• gas
• liquid
• solid

Tags

NGSS.MS-PS1-4

What is a mixture?

• Pennies
• 2 or more different things combined.
• Ice
• Marbles

Tags

NGSS.5-PS1-4

An example of a physical property would be?

• Rust on a nail
• Salt dissolved in water.
• Wood burning
• An egg frying

What happened to change the state of the butter?

• More energy was added.
• Heat was taken away.
• More chemicals were added.
• The particles of the butter slowed down.

Tags

NGSS.MS-PS1-4

Which of the following is a physical change?

• Dissolving

• Rapid release of heat

• Fizzing (release of gas)

• Rusting

When you increase the energy by heating a liquid what happens to the motion of the molecules

• They slow down

• They speed up

• Heat doesnt change the motion of the molecules

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4