Physical and Chemical Changes

what is the definition of chemical change?

• any change that results in the formation of new chemical substances. 
• changing clothes
• matter cannot be created or destroyed, only change form
• changes affecting the form of a chemical substance, but not its chemical composition.

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

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

Is burning wood a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is bleaching your hair a physical or chemical change?

• physical
• chemical

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

Photosynthesis is an example of a

• physical change
• chemical change

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

What is an example of a Chemical change?

• Ripped paper 
• boiled egg
• cracked egg
• sugar in water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is a physical change?

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

Tags

NGSS.MS-PS1-4

Which of the following is a chemical property of water?

• Reacts with pure sodium.
• Boils at 100 ^oC.
• Dissolves sugar easily. 
• Has a density of 1 gm/mL

Which is a chemical change?

• freezing fruit juice
• slicing a potato
• boiling water
• copper metal turning green

Tags

NGSS.MS-PS1-2