Dissolving Materials

How can you test if a substance is soluble?

• Put it in the sun

• Put it in water

• Put it in the freezer

• Heat it up

If the substance floats on top of the water, that means the substance is....

• light weight

• soluble

• insoluble

• salt

Which of these substances are soluble? (there could be more than one answer)

• salt

• sugar

• sand

• marbles

Helen pours some tiny stones into a glass of water. The stones makes the water cloudy before they all settle down at the bottom of the glass. Which statement is true?

• The stones are soluble and have dissolved in the water.

• The stones are insoluble and have not dissolved in the water.

• The stones are soluble but need to be stirred to dissolve.

• The stones are insoluble but soluble if added to the water slowly.

Which substance is in the wrong column of the chart?

• sugaar

• honey

• grass

• salt

Tags

NGSS.MS-PS1-2

The sand in this water is . . . .

• soluble

• insoluble

The oil in this water is . . .

• soluble

• insoluble

Tags

NGSS.MS-PS1-2

What happens when a substance dissolves in water?

• The substance floats to the top

• The substance breaks down and becomes part of the water

• The substance sinks to the bottom

Tags

NGSS.MS-PS1-2