Density Reassessment Review

Density Reassessment Review

What is density?

​Density is the amount of matter in a volume

Matter is the amount of mass. How much "stuff" is there. If there are 20 students in this room, the "matter" is then 20.
Volume is the give SPACE that contains the matter.
If there are 20 students in my room, the volume is the ROOM.

Multiple Choice

________ is how much matter is in an object.

• matter

• mass

• volume

Multiple Choice

_______________ is the amount of space an object takes up.

• Matter

• Mass

• Volume

Multiple Choice

amount of matter in an object

• density

• volume

• weight

• mass

Multiple Choice

The amount of space an object takes up

• mass
• volume
• density
• gram

Multiple Choice

Which box has a greater density?  

• Box A
• Box B

Multiple Choice

Which object has the highest density in this picture?

• A

• B

• C

The amount of SPACE something takes up.
Measures in either cm^3 or mL.

​Volume

The amount of MATTER in an object.
Measured USUALLY in grams or kilograms

​Mass

Ok, so now we know...

Density is mass divided by volume.

​To find ANYTHING, simply cover UP what you want to find, and do the math!!

​So how do we calculate density?

An eraser has a mass of 10 grams in a volume of 20 cm^3. What is it's density?

​

​

​Let's try a few

An eraser has a mass of 10 grams in a volume of 20 cm^3. What is it's density?

​Density = M/V
D=10 g/20 cm^3= 0.5 g/cm^3

​Let's try a few

A metal bar has a density of 1.5 g/cm^3 and a volume of 10 cm^3. What is it's mass?

​Let's try another

A metal bar has a density of 1.5 g/cm^3 and a volume of 10 cm^3. What is it's mass?

M=D x V
1.5 gm/cm^3 x 10 cm^3

= 15 gms

​Let's try another

Multiple Choice

An eraser has a mass of 4g and a volume of 2cm³. What is its density?

• 8 g/cm³
• 2 g/cm³
• 1/2 g/cm³
• 24 g/cm³

Multiple Choice

A paper clip has a mass of 9g and a volume of 3cm³. What is its density?

• 3 g/cm³
• 1/3 g/cm³
• 27 g/cm³
• 39 g/cm³

Multiple Choice

What is the density of a liquid that has a mass of 27g and a volume of 30ml?

• 0.9 g/ml
• 3 g/ml
• 57 g/ml
• 810 g/ml

Water has a density of 1.0

​Anything heavier than that will SINK, anything lighter than that will FLOAT!

​

​Ok, what about liquids?

Multiple Choice

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

Multiple Choice

Which liquid is the least dense?

• oil
• water
• syrup 
• plastic bottle

do we got it?
Let's try a few more!

Multiple Choice

A crayon has a mass of 10g and volume of 5 mL. What is the density?

• 30 g/mL
• 15 g/mL
• 1 g/mL
• 2 g/mL

Multiple Choice

What is the formula for density?

• density = mass x volume
• density = mass / volume
• density = mass + volume
• density = mass - volume

Multiple Choice

A piece of copper has a mass of 89g and a volume of 10 cm3.  What would be the density of the copper?

• 0.89 g/cm3
• 89 g/cm3
• 8.9 g/cm3
• 890 g/cm3

Multiple Choice

What is the density of an object with a mass of 3g and a volume of 1cm³?

• 1/3 g/cm³

• 3 g/cm

• 3 g/cm³