Density and Solubility

Why do some substances float on water?

• they are warmer than water
• they are cooler than water
• they are more dense than water
• they are less dense than water

Which liquid is the least dense?

• oil
• water
• syrup 
• plastic bottle

If you poured 3 liquids that do not mix how could you tell which one is the most dense?

• The liquid on top
• The liquid in the middle
• The liquid at the bottom

A brick sinks in water while a wooden block of the same size floats.  This is because the brick has a

• lower volume than the wooden block
• lower density than the wooden block
• higher volume than the wooden block
• higher density than the wooden block

Put the liquids in order from most dense to least dense?

• 4, 3, 2, 1
• 1, 2, 3, 4
• 3, 4, 2, 1, 
• 4, 3, 1, 2

Tags

NGSS.MS-PS1-2

Students were investigating the density of some substances. The students can make all of the following conclusions about their investigation EXCEPT...

• The sponge is more dense than oil

• The grape is more dense than water but less dense than oil

• The screw is more dense than water and more dense than oil

• Water is less dense than syrup and more dense than oil

Tags

NGSS.MS-PS1-2

A student put the 4 objects listed in a bucket of water. Which two objects are most likely less dense than water?

• Glass Marble and Metal Paper Clip

• Wood Block and Plastic Ball

• Wood Block and Metal Paper Clip

• Glass Marble and Plastic Ball

Tags

NGSS.MS-PS1-2

What is Solubility?

• If something dissolves in water

• If something sinks in water

• If something floats in water

• None of the above

What does dissolve mean?

• The particles spread out and become part of the water

• It sinks to the bottom of the water

• It floats on top of the water

• None of the above

Tags

NGSS.MS-PS1-2

Define the term insoluble.

• Can dissolve in water.

• Cannot dissolve in water.

• Partially dissolves in water.