Physical & Chemical Changes

Which is a physical change?

• burning match 
• vinegar in baking soda 
• melting butter
• cooking an egg

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties
• liquid properties
• real properties

Tags

NGSS.MS-PS1-2

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

What characteristic defines all chemical changes?

• There is a change of state.
• Electricity is produced.
• A new material is formed.
• Bubbles are produced. 

Melting is a ______ change.

• physical
• chemical

Is making a cake physical or chemical

• physical
• chemical

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

• chemical
• physical

Is bleaching your hair a physical or chemical change?

• physical
• chemical

A change in the size, shape, or state of matter.

• chemical change
• physical change
• chemical reaction
• electron change

Tags

NGSS.MS-PS1-4

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

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