Physical Properties: Density and Mixtures

What is volume?

• how much an object weighs

• an object's mass

• the amount of space that an object takes up

• how big something is

Something will FLOAT when...

• ... the mass is equal to the volume

• ... the mass is less than the volume

• ... the mass is greater than the volume

Something will SINK when...

• ... the mass is equal to the volume

• ... the mass is less than the volume

• ... the mass is greater than the volume

What can you conclude from the picture?

• The rock and the cork have similar density.

• The rock is less dense than the cork, because the rock sank and the cork floats.

• The cork is more dense than the water.

• The cork is less dense than the rock or water.

Tags

NGSS.MS-PS1-2

What could you conclude from the picture?

• The edible oil is less dense than the lamp oil, but it is more dense than the milk.

• The milk is more dense than the dishwashing liquid, but less dense than the sugar syrup.

• The lamp oil is the most dense liquid shown.

• The water is more dense than the oils, but has equal density to the dishwashing liquid.

Tags

NGSS.MS-PS1-2

How might you separate the jellybeans?

• Evaporation

• Magnetism

• Condensation

• None of the above.

How might you separate this mixture?

• Magnetism then evaporation

• Evaporation then condensation

• magnetism only

• filtration only

Kallee is given a mixture of salt and water. What would be the best way for her to separate the salt from the water?

• Let the water evaporate.

• Pass a magnetic wand through the mixture until all of the salt is captured.

• Pass the mixture through a coffee filter.

• Lower the temperature to cause condensation to occur.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following is NOT a mixture?

• potato chips, M&Ms, and pretzels

• meatballs and noodles

• coffee

• sugar and water

Which of the following is considered a solution?

• hot cocoa

• peanut butter sandwich

• thumb tacks and paperclips

• rocks and sand