Chemical/Physical Changes/Properties

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Tags

NGSS.MS-PS1-2

Is burning wood a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

Is hammering wood together to build a house a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following is NOT an example of a physical change?

• crumpled paper
• pencil sharpening
• shrunken clothing
• sour milk

Tags

NGSS.MS-PS1-2

Blue Color

• Physical Property
• Chemical Property

Tags

NGSS.MS-PS4-2

Hardness

• Physical Property
• Chemical Property

Your friend decides to toast a piece of bread, but leaves it in the toaster too long. The bread is black and the kitchen if full of smoke. 

• Physical Change
• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

You forgot to dry the bread knife when you washed it and reddish brown spots appeared on it. 

• Physical Change
• Chemical Change

Tags

NGSS.MS-PS1-2

In a fireworks show, the fireworks explode giving off heat and light. 

• Physical Change
• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following tells you that a chemical change may have occurred?

• Change Shape
• Melting
• Vaporizing
• Change in color

Tags

NGSS.MS-PS1-2