DENSITY

Question 1

What is the equation for density?

Answer 1

Density= MASS/VOL

Question 2

What could the equation be rearranged to?

Answer 2

Mass= Density X Volume
Volume= Mass/Density

Question 3

TRUE OR FALSE (with reason)- If the density is high, so is the mass.

Answer 3

TRUE

Question 4

A piece of metal has a volume of 50cm^3, and a mass of 800G. Calculate the piece of metal’s density.

Answer 4

VOL= 50
MASS= 800
DENSITY= MASS/VOL
800/50=16
MERGE UNITS=
16G/CM^3

Question 5

A SOLID IRON STATUE HAS A MASS OF 897G, IF THIS WAS IN KG HOW WOULD WE CONVERT TO GRAMS?

Answer 5

KG->G
X1000

Question 6

THE SOLID IRON STATUE HAS A MASS OF 897G,
THE SOLID IRON STATUE HAS A DENSITY OF 7.8G/CM^3
FIND THE VOLUME.

Answer 6

VOL= MASS/DENSITY
897/7.8=115
115CM^3
Units of volume are cm^3

Question 7

IF A CYLINDER IS MADE OF GLASS, THE DENSITY OF THE GLASS IS 2.5G/CM^3, the radius of the top circle is 7cm and the height is 20cm. Find the mass of the cylinder.
(Use something for exact value of PI)

Answer 7

Find volume first to satisfy the equation,
PI X RADIUS^2 X HEIGHT
RADIUS= 7 SO 7^2 IS 49
PI X 49 X 20
= 3078.760801-> EQUATION NOW IS
MASS= DENSITY X VOLUME
(2.5X3078.760801=7,696.902)

Question 8

7696.902g to kg (rounded up) is what?

Answer 8

7696.902/1000=7.697-> ROUND UP TO 7.7 AS THE VALUE 9 ALLOWS 6 TO ASCEND.

Question 9

IF GLEN HAS A TOY CAR THAT HAS A MASS OF 2KG, AND A DENSITY OF 54G/CM^3, WHAT IS THE VOLUME? (Round to nearest decimal)

Answer 9

2KG-> G= 2000G (X1000)
VOLUME= MASS/DENSITY
VOLUME= 2000/54
2000/54=37.037
Volume= 37cm^3