Density Practice Test

A material with a high density feels (lighter  or heavier) than a material with a low density of a same size.

heavier

What is the volume of water in the following picture to the correct Significant Figures?*

44.5mL

Density is how much (mass  or volume) there is per given size of a material.

mass

What is the volume of the solid in the following picture?

2.7ml

Materials with a higher density than water (float  or  sink) when you put them in water.

sink

A piece of metal with a mass of 147g is placed in a graduated cylinder.  The water level rises from 20 mL to 41mL.  What is the volume of the metal?

21mL

A piece of metal with a mass of 147g is placed in a graduated cylinder.  The water level rises from 20 mL to 41mL.  What is the volume of the metal?

-From the question above, what is the density of the metal?

7grams/mL

Which of the following diagram represents an object that is more dense?*

A

Which of the following diagram represents an object that has bigger volume?*

B

Warm water has smaller density than cold water because

warm particles take up more space

From the picture below, which one has the largest density?*

honey

What happens when you mix cold water and warm water?

Warm water rises before they mix

What is the correct volume of the battery shown in the diagram? Assume the first picture shows the water before putting the battery in the graduated cylinder.*

5mL

What is the mass of water based on the following information?

Mass of empty beaker: 120 grams

Mass of beaker and water: 190 grams

190 - 120 grams

How do you get the density of the block shown below?*

You need to divide mass by volume

How do you get the volume of the block below?*

215 x 440 x 100

Write the answer for the correct number and units for the following calculations. Be sure to round the answers to the correct significant figures.

                53.0 grams / 6.4 mL 

8.3 g/mL

How many Liters are in 250 mL?*

0.25 L

How many centimeters are in 2 meters?*

200 centimeters

How many Significant Figures are in the following numbers?

A. 0.005800

B. 58000

A. 4 B. 2

Beaker

flask

Test tube

graduated cylinder

funnel

Multiply/divide sigfigs

match the sigfig with the smaller sigfig number

add/subtract sigfigs

match with the least digits after .

5.992=

4 sigfigs

0.0485=

3 sigfig

0.0000002=

1 sigfig

2.5× 10power of 3

2500

density =

mass over volume

mass/divided by/volume

mass is

the amount of matter an object contains (aka how heavy)

volume is

how much space it takes up ( aka how big)

Hot water -

more kinetic(moving) energy —> molecules moves away from one another—>takes up more space —→ density becomes smaller