Physical and Chemical Changes

What is an example of a mixture that can be separated using a filter and a funnel?

• Kool Aid

• Coca Cola

• salt water

• sand and water mixture

What would be the best way to separate a mixture of salt and water?

• density

• filtering

• evaporation

• magnetic attraction

Substances in a mixture keep their own properties and can be separated from the mixture. Which substance can be easily separated by dissolving the mixture in water?

• sand

• salt

• sawdust

• iron fillings

A solution is a mixture that looks EXACTLY the same everywhere. These mixtures CANNOT be separated by a filter. Which of these COULD use a filter to separate the mixture?

• A mixture of rocks and oils.

• A mixture of salt and water.

• A mixture of sugar and water.

• A mixture of juice and water.

Gravel, sand, silt, and clay are particles that make up soil. What property would you use to separate the four particles?

• color

• minerals

• shape

• size

What must be added to water in order to change state from liquid to a gas?

• more liquid

• energy or heat

• more oxygen atoms

• more hydrogen atoms

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which is NOT a physical change in paper?

• tearing paper

• folding paper

• burning paper

• cutting paper

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Which is a physical change?

• rusting iron

• burning paper

• cracking an egg shell

• reacting baking soda and vinegar

What is taking place on the surface of this water glass?

• sublimation has occurred on the surface of the glass

• water vapor in the air close to the glass has cooled and caused condensation

• water is evaporating because of the increase in temperature

• heat has caused the ice to melt and the glass is full and running over

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

When water changes state from solid to liquid to gas, which one DOES NOT occur?

• chemical change

• physical change

• addition of energy

• increase in temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4