Kelly needs to separate a mixture of sand and sawdust. She tried using tweezers to pick out the pieces of sawdust, but that didnt work. Her grandfather suggested she use water. How will water help Kelly separate the mixture?
A.) The sand will dissolve in water, but the sawdust will not
B.) The sand will react with water, but the sawdust will not
C.) The sand will sink in water, but the sawdust will float in water
D.) The sand will float in water, but the sawdust will sink in water

Question

Kelly needs to separate a mixture of sand and sawdust. She tried using tweezers to pick out the pieces of sawdust, but that didnt work. Her grandfather suggested she use water. How will water help Kelly separate the mixture? 
A.) The sand will dissolve in water, but the sawdust will not
B.) The sand will react with water, but the sawdust will not
C.) The sand will sink in water, but the sawdust will float in water
D.) The sand will float in water, but the sawdust will sink in water

anonymous · Answer

@Isaiah.Feynman

isaiah.feynman · Answer

This is more realistic...ever seen sawdust before?

anonymous · Answer

Yes @Isaiah.Feynman

isaiah.feynman · Answer

Have you done stuff to it? Like pouring it in water maybe?

anonymous · Answer

No but I am guessing it wouldn't dissolve @Isaiah.Feynman

isaiah.feynman · Answer

Yep I have played with it when I was younger. It doesn't dissolve in water, it floats.

anonymous · Answer

And obviously, the sand will sink @Isaiah.Feynman

isaiah.feynman · Answer

Yep