Physical and Chemical Changes

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

• Physical

• Chemical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is freezing juice a physical or chemical change?

• Physical Change
• Chemical Change

A __________ is a mixture that is formed when a solid is dissolved in a liquid.

• Chemical compound
• Solution
• Endothermic reaction
• Exothermic reaction

In which of these do particles move slowest?

• matter
• gas
• liquid
• solid

Tags

NGSS.MS-PS1-4

Which is NOT a physical change?

• Cutting a pizza into equal slices.
• Ice cubes melting back into liquid. water
• Baking cupcakes.
• A chocolate bar melting.

Tags

NGSS.MS-PS1-4

When you increase the energy by heating a liquid what happens to the motion of the molecules

• They slow down

• They speed up

• Heat doesnt change the motion of the molecules

Tags

NGSS.MS-PS1-4

Which of the following is a example of physical change ?

• burning of wood

• photosynthesis

• melting of ice-cream

• ripening of fruit

In physical change , the substance formed has different properties than the original substance.

• True

• False

A chemical change may involve

• Evolution of gas

• Change in temperature

• Change in colour

• All of the above

Tags

NGSS.MS-PS1-2

Is this an example of a physical or chemical change?

• physical

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5