Physical and Chemical Changes

Which of the following is a example of physical change ?

• burning of wood

• photosynthesis

• melting of ice-cream

• ripening of fruit

Tags

NGSS.MS-PS1-4

What does the picture represent ?

• physical change

• chemical change

Tags

NGSS.MS-LS2-3

NGSS.MS-PS1-2

Observe the picture and choose the correct option.

• Irreversible physical change

• Reversible physical change

Which one is not the characteristics of a physical change ?

• They are changes in the physical properties of substance.

• They are often irreversible

• Rearrangement of molecules take place

• No new substances are formed

Wood that is burning in a brush pile has heat, and produces ashes.

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Is milk going sour a physical or chemical change?

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

Is this an example of a physical or chemical change? 

• Physical because it is a mixture.
• Chemical because the parts have changed shape.

Tags

NGSS.MS-PS1-2

Is freezing juice a physical or chemical change?

• Physical Change
• Chemical Change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why is this a physical change?

• The shape of the clay has been changed.
• The clay can be put back into a ball shape instead of a birthday cake.
• The clays has not changed chemically.
• All are true

Tags

NGSS.MS-PS1-2

What is a mixture?

• Pennies
• 2 or more different things combined.
• Ice
• Marbles

Tags

NGSS.5-PS1-4