water evaporating

• Physical Change

• Chemical Change

burning a log

• Physical Change

• Chemical Change

Dissolving salt in water

• Physical Change

• Chemical Change

Tags

NGSS.5-PS1-4

What is the process by which a chemical change occurs?

• Conservation of Matter

• Physical Change

• Chemical reaction

• Condensation

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What always happens during a chemical change?

• A new product is created

• The material dissolves

• The total mass of the material changes

• The material changes state from a solid to a liquid

What is the best definition of a chemical change?

• A change in the state of matter in which the form changes but the properties stay the same.

• A change in the state of matter in which the material changes into an entirely different material with properties that are different from the original material.

• A change in the state of matter in which the material is still the same just in a different form.

Tags

NGSS.MS-PS1-2

Which is not evidence that a chemical reaction has occured

• Production of flames

• Change in temperature or heat

• freezing

• Production of light

Tags

NGSS.MS-PS1-2

The mixing of two or more substances can result in a new substance.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a ___________change, a substance changes into a different substance.

• Physical
• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

You know that a chemical reaction has occurred if

• there is a precipitate (new solid)

• there is a color change.

• there is a temperature change.

• All of these answers are evidence.

Tags

NGSS.MS-PS1-2