Physical and chemical changes

Which is an example of a chemical change?

• water being boiled

• paper being burned

• metal being melted

• a wooden board being cut in half

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Judy puts an ice cube in a beaker and it melts. This is a good example of

• a physical change

• a chemical change

• an experiment

• an analysis

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When materials combine to form new compounds it is a chemical change. Which is an example of a chemical change?

• baking powder fizzing

• water boiling

• ice melting

• sugar cube dissolving

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which answer makes a correct statement?

• Physical change only changes the size.

• Physical change only changes the color.

• Physical changes begin and end with the same matter.

• Physical changes change the matter into something totally different.

Tags

NGSS.MS-PS1-4

Which is NOT a physical property of a substance?

• value

• mass

• shape

• texture

Which statement is true?

• A mixture includes only solids.

• A solution cannot be separated.

• A solution is just one substance.

• A solution includes a dissolved substance.

Sarah and Jake were each given a ball of clay of the same weight. Both students used all their clay to make an object. Sarah rolled hers into a ball; Jake made a long, skinny rope. What do you expect the weight of the clay figures to be now?

• Sarah’s weighs more because it is round.

• Jake’s weighs more because it is long.

• There is no way of knowing.

• The figures would be equal.

Which of the following is NOT a physical property of matter?

• phase (solid, liquid, gas)

• hardness

• shape

• flammability

Five (5) grams of salt is dissolved in 100 ml of water to form a saltwater solution. If the solution is left to sit until the water has evaporated away, how much salt would you expect to be left in the container.

• 2.5 grams

• 5 grams

• 105 grams

• 500 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

In which substance do the particles move the MOST?

• air

• ice

• milk

• wood

Tags

NGSS.MS-PS1-4