Physical and Chemical Changes of Matter

What are physical properties?

• Properties that describe how matter changes into other matter

• Properties that can be observed

• Flammability, pH, acidity, toxicity

• Color, length, volume, luster, density

Tags

112.27.b.6.C

Chemical changes are usually irreversible

• True

• False

Tags

112.27.b.6.C

In a ______ change, the matter changes form, but nothing new is created.

• Physical

• Chemical

Tags

112.27.b.6.C

Examples of a CHEMICAL change

• burning

• rotting

• mixture

• baking a cake

• cutting

Tags

112.27.b.6.C

Examples of a PHYSICAL change

• Cutting paper

• Fireworks

• Ice melting

• Chopping wood

• Rusting

How can you tell a chemical change has occurred?

• When composition remains the same

• When energy is given off or absorbed

• When a mixture is formed

• When the appearance changes

Tags

NGSS.MS-PS1-2

Clues to CHEMICAL change

• Color change, temperature change, sound production, gas production, odor production, precipitate

• 
  alteration in size, shape or form of matter

Tags

NGSS.MS-PS1-2

In a physical change, does a substance have the same chemical composition

• Both before and after the change

• Before the change

• After the change

• Never

Tags

NGSS.MS-PS1-4

A change in an object's odor is an example of what type of change?

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What are the states of matter?

• Solid

• Liquid

• Air

• Gas