Dissolving Matter

If you want to make salt dissolve quicker, you should use _____ water.

• cold

• hot

Tags

NGSS.MS-PS1-4

I can tell that oil doesn't dissolve in water because oil separates and ____________.

• disappears

• forms a layer at the top and bottom of the cup

• changes color

• forms bubbles at the bottom and top of the cup

Which one dissolves in water?
Coins or hot chocolate powder?

• coins

• hot chocolate powder

Which one separates in water...
oil or vinegar?

• oil

• vinegar

Which can dissolve in water...
salt or foil?

• salt

• foil

Foil, coins, glass, & oil are materials that _______ dissolve in water.

• can

• cannot

Salt, sugar, honey, and vinegar are materials that ______ dissolve in water.

• can

• cannot

Ryan put a sugar cube in 1 cup of water and observed it. It dissolved after stirring for 30 seconds.

He did the same thing in another cup, but this time he used hot water. 

What did Ryan change in the 2nd cup?

• the amount of water

• the solid

• the temperature of the water

• the amount of time he stirred the water

Tags

NGSS.MS-PS1-4

Ryan put a sugar cube in 1 cup of water and observed it. It dissolved after stirring for 30 seconds.

He did the same thing in another cup, but this time he used hot water. 

What question is he trying to answer?

• Does the amount of water affect if a solid dissolves?

• Does the amount of heat affect if a solid dissolves?

• Does the amount of stirring affect if a solid dissolves?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Eleanor put a sugar cube in 1 cup of water and observed it. It dissolved after stirring for 30 seconds.

She did the same thing in another cup, but this time she used more water. 

What question is she trying to answer?

• Does the amount of heat affect if a solid dissolves?

• Does the amount of water affect if a solid dissolves?

• Does the amount of stirring affect if a solid dissolves?