Topic # 1.2, 1.3
GPS: 1b, SCSh5e
Properties & Changes of Matter,
Density Funsheet
Name: ______________________
Date: ___/___/___ Per: ____ .Chem.
Directions: Circle the correct word or phrase in the sentences below. Use your notes on Physical & Chemical Properties & Changes, Density.
1.
Tearing a sheet of paper into pieces causes a (physical, chemical) change in the paper.
2.
Water is a clear, colorless liquid at room temperature. The words clear and colorless describe two (physical, chemical) properties of water.
3.
The melting of ice is a (physical property, chemical property, physical change, chemical change).
4.
A (physical property, chemical property, physical change, chemical change) produces new substances.
5.
When a candle burns, physical and chemical changes take place. The (melting, burning) of the wax is a physical change. The melted wax, as it
burns, combines with gaseous oxygen in the air. After this (physical, chemical) change, water vapor and carbon dioxide gas are formed.
6.
An (intensive, extensive) property does not depend on how much of an element or compound is present in a sample.
7.
The mass of an object is an (intensive, extensive) property.
8.
The correct rearrangement of the density equation for volume is V = ( mD, D/m, m/D ).
9.
Cubic centimeters (cm3) is a unit most appropriately used for the quantity of (mass, density, volume).
10. Grams per milliliter (g/mL) is a unit most appropriately used for the quantity of (mass, density, volume).
The decomposition reaction of mercury (II) oxide (HgO) is shown in the picture below and in the reaction written below.
HgO (s)  Hg (l) + O2 (g)
Mercury (Hg)
Physical properties:
Directions: Place the letters for the words or phrases below in the
appropriate blanks on the picture.
Mercury’s (Hg) Properties:
A. forms alloys with most metals except iron
B. silver-white
C. reacts with nitric acid and hot sulfuric acid
D. can be cut with a knife
E. oxidizes to form mercury(II) oxide
F. liquid metal
G. in the solid state, is ductile and malleable
H. combines readily with sulfur
Oxygen’s (O) Properties:
I. supports combustion
J. colorless, odorless gas
K. soluble in water
Categorize the following as a physical property
(PP) or chemical property (CP) of sulfur.
a. Its density is 2.97 g/cm3.
PP
____, ____, ____, ____
Chemical properties:
Oxygen (O2)
____, ____, ____, ____
Physical property: ____
Chemical properties:
____, ____
Mercury (II) Oxide’s (HgO) Properties:
L. dissolves in dilute nitric acid or
hydrochloric acid
M. insoluble in water
N. bright red or orange-red color
O. odorless crystalline solid
P. decomposes when exposed to light
or at 500ºC to form mercury and
oxygen gas
Mercury (II) Oxide (HgO)
Physical properties:
____, ____
Chemical properties:
____, ____, ____
Categorize the following as a physical property
(PP) or chemical property (CP) of phosphorus.
Categorize the following examples as a
chemical change (CC) or physical change (PC).
a. It is a white, waxy solid.
a. bending a metal rod
b. It reacts with hydrogen to
form a gas.
b. It burns in air.
b. burning wood
c. It is a yellow solid.
c. Its melting point is 44.1°C.
c. breaking glass
d. Its melting point is 112°C.
d. Its density is 1.82 g/cm3.
d. painting wood
e. It combines with oxygen.
e. Its boiling point is 280.3°C.
e. cooking
Directions: Physical and chemical changes occur all around us. For example, cooking spaghetti in a pot of water on the stove involves such
changes. For each of the changes described below, indicate whether the change that occurs is physical or chemical by circling the right choice.
1. As the water in the pot is heated, its temperature rises.
physical change
2. As more heat is added, the water begins to boil and steam is produced.
chemical change
physical change
3. The heat used to cook is produced by burning natural gas in the stove burner.
chemical change
physical change
4. The metal burner on which the pot rests while being heated becomes red as its temperature rises.
5. A strand of spaghetti has fallen onto the burner, where it turns black and begins to smoke.
6. When the spaghetti is cooked in the boiling water, it becomes soft.
physical change
chemical change
physical change
physical change
chemical change
chemical change
chemical change
Density Problems: Calculate the following problems, using your notes on Density. Show all your work for full credit. This includes: 1) column of
information, 2) variable equation, and 3) plugged-in equation—with units!—and your answer, with the correct amount of sig figs.
1. A student finds a rock on the way to school. In the laboratory he
determines that the volume of the rock is 22.7 cm3, and the mass in
39.94 g. What is the density of the rock?
D = _____________
2. When a sample of a metal alloy that has a mass of 9.65 g is placed
into a graduated cylinder containing water, the volume reading in
the cylinder increases from 16.0 mL to 19.5 mL. What is the density
of the alloy sample in g/cm3? (Hint: 1 cm3 = 1 mL)
m = _____________
D = _____________
V = _____________
m = _____________
V = _____________
What method of measurement did the student
most likely use to find the volume of the rock?
water
displacement
measured
volume
3. Calculate the density of a sphere of an unknown material that has a mass of
52.46 g and a radius of 3.25 cm. (Hint: use the sphere V equation)
4. What is the mass of a 350 cm3 sample of pure silicon with a
density of 2.336 g/cm3?
D = _____________
D = _____________
m = _____________
m = _____________
V = _____________
V = _____________
5. If 30.94 g of a liquid occupies a space of 35.0 mL, what is the 6. The density of silver is 10.49 g/cm3. If small bar of pure silver measures 1.5
density of the liquid?
cm by 2.0 cm by 4.0 cm, what would the mass be for this sample?
D = _____________
m = _____________
V = _____________
(Hint: use the rectangle V equation)
D = _____________
m = _____________
V = _____________
7. How many cm3 would a 55.93 g sample of copper occupy if it has a
density of 8.92 g/cm3?
8. Pure gold has a density of 19.32 g/cm3. What volume would a piece
of gold have if it had a mass of 318.97 g?
D = _____________
D = _____________
m = _____________
m = _____________
V = _____________
V = _____________
9. A stack of 500 sheets of paper measuring 28 cm by 21 cm is 4.5 cm high has a 10. How many grams of tin would occupy 550 cm3, if it has a
mass of 740 g. What is the density of the stack of paper?
density of 7.26 g/cm3?
D = _____________
D = _____________
m = _____________
m = _____________
V = _____________
V = _____________
11. CHALLENGE: The density of a lead cylinder is 11.34 g/cm3. What
would be the length of a 200.0 g cylinder of this metal if its radius is
1.25 cm? (Hint: solve for V first, then use V = πr2h to get h.)
12. CHALLENGE: The mass of Earth is 5.974 x 1024 kg. Assume that
Earth is a sphere of diameter 1.28 x 107 m and calculate the average
density of Earth in kg/m3.
D = _____________
D = _____________
m = _____________
m = _____________
V = _____________
V = _____________
13. Mercury has a density of 13.5 g/cm3. How much space would 52.4 g 15. The density of a sample of gold is 19.32 g/cm 3. If the sample has a
of mercury occupy?
volume of 48.9 cm 3, what is the mass?
D = _____________
D = _____________
m = _____________
14. V = _____________
m = _____________
V = _____________
16. The mass of Earth is 5.974 x 1024 kg. Assume that Earth is a sphere
of diameter 1.28 x 107 m and calculate the average density of Earth
in kg/m3.
D = _____________
m = _____________
V = _____________
17. A student drops an eraser into 15.0 mL of water in a graduated
cylinder. The water level rises to 16.9 mL. The eraser’s mass is 25.0
g. What is the density of the eraser?
18. The density of copper is 4.44 g/cm.3. If the mass of a piece of copper
is 26.326 g, find the volume.
D = _____________
m = _____________
m = _____________
V = _____________
D = _____________
V = _____________
19. Maria has four solid objects: a sphere, a prism (rectangular solid), a cube, and a
cylinder. She measured the dimensions and masses of all 4 objects and recorded
them in the table to the right. Find the density of all four of the objects.
Sphere V = 4/3 π r3
Cylinder V = π r2  h
A. Sphere
B. Prism
D = _____________
D = _____________
m = _____________
m = _____________
V = _____________
V = _____________
C. Cube
D. Cylinder
D = _____________
D = _____________
m = _____________
m = _____________
V = _____________
V = _____________
Object
A (sphere)
B (prism)
C (cube)
D (cylinder)
Dimensions
r = 2.5 cm
7cm x 2 cm x 8.6 cm
3.5 cm
r = 1.7 cm, h = 9.4 cm
Mass
521.0 g
958.4 g
341.3 g
679.3 g
What do all of Maria’s objects have in common? ________________________________________________________________________________
1. The aluminum foil on a certain roll has a total area of 18.5 m2 and a mass of 1275 g. Using a density of 2.7 g per cubic
centimeter for aluminum, determine the thickness in millimeters of the aluminum foil.
2. If a liquid has a density of 1.17 g/cm3, how many liters of the liquid have a mass of 3.75 kg?
3. A stack of 500 sheets of paper measuring 28 cm _ 21 cm is 44.5 mm high and has a mass of 2090 g. What is the
density of the paper in grams per cubic centimeter?
4. A triangular-shaped piece of a metal has a mass of 6.58 g. The triangle is 0.560 mm thick and measures 36.4 mm on
the base and 30.1 mm in height. What is the density of the metal in grams per cubic centimeter?
5. A packing crate measures 0.40 m _ 0.40 m _ 0.25 m. You must fill the crate with boxes of cookies that each measure
22.0 cm _ 12.0 cm _ 5.0 cm. How many boxes of cookies can fit into the crate?
Calculate the unknown quantities in the following table. Use the following relationships for volumes of the various
shapes.
Volume of a cube _ l _ l _ l
Volume of a rectangle _ l _ w _ h
Volume of a sphere _ 4/3_r3
Volume of a cylinder _ _r2 _ h
7.
8. Pure gold can be made into extremely thin sheets called gold leaf. Suppose that 50. kg of gold is made into gold leaf
having an area of 3620 m2. The density of gold is 19.3 g/cm3.
a. How thick in micrometers is the gold leaf?
b. A gold atom has a radius of 1.44 _ 10_10 m. How many atoms thick is the gold leaf?
9. A chemical plant process requires that a cylindrical reaction tank be filled with a certain liquid in 238 s. The tank is 1.2
m in diameter and 4.6 m high. What flow rate in liters per minute is required to fill the reaction tank in the specified
time?
10. The radioactive decay of 2.8 g of plutonium-238 generates 1.0 joule of heat every second. Plutonium has a density of
19.86 g/cm3. How many calories (1 cal _ 4.184 J) of heat will a rectangular piece of plutonium that is 4.5 cm _ 3.05 cm _
15 cm generate per hour?
11. The mass of Earth is 5.974 _ 1024 kg. Assume that Earth is a sphere of diameter 1.28 _ 104 km and calculate the
average density of Earth in grams per cubic centimeter.
12. What volume of magnesium in cubic centimeters would have the same mass as 1.82 dm3 of platinum? The density
of magnesium is 1.74 g/cm3, and the density of platinum is 21.45 g/cm3.
13. A roll of transparent tape has 66 m of tape on it. If an average of 5.0 cm of tape is needed each time the tape is used,
how many uses can you get from a case of tape containing 24 rolls?
14. An automobile can travel 38 km on 4.0 L of gasoline. If the automobile is driven 75% of the days in a year and the
average distance traveled each day is 86 km, how many liters of gasoline will be consumed in one year (assume the year
has 365 days)?
15. A hose delivers water to a swimming pool that measures 9.0 m long by 3.5 m wide by 1.75 m deep. It requires 97 h
to fill the pool. At what rate in liters per minute will the hose fill the pool?
16. Automobile batteries are filled with a solution of sulfuric acid, which has a density of 1.285 g/cm3. The solution used
to fill the battery is 38% (by mass) sulfuric acid. How many grams of sulfuric acid are present in 500 mL of battery acid?