1. DENSITY – The mass of one cm3 or one mL of a substance
Aluminum
Mercury
Platinum
13.6 g/cm3
21.5 g/cm3
2.7 g/cm3

2. PROBLEM: Mercury (Hg) has a density of 13. 6 g/cm3
PROBLEM: Mercury (Hg) has a density of 13.6 g/cm3. What is the mass of 95 mL of Hg in grams?

3. PROBLEM: Mercury (Hg) has a density of 13. 6 g/cm3
PROBLEM: Mercury (Hg) has a density of 13.6 g/cm3. What is the mass of 95 mL of Hg? G= U= E= S=
D= 13.6 g/cm3, Volume = 95mL
Mass=?
Density= mass
volume
Mass= density x volume
Mass= 13.6 g/cm3 x 95mL
1 cm3 = 1 mL
1292g
1300 g

4. Problem: A piece of copper has a mass of 57. 54 g. It is 9
Problem: A piece of copper has a mass of g. It is 9.36 cm long, 7.23 cm wide, and mm thick. Calculate density (g/cm3).

5. Problem A piece of copper has a mass of 57. 54 g. It is 9
Problem A piece of copper has a mass of g. It is 9.36 cm long, 7.23 cm wide, and 0.95 mm thick. Calculate density (g/cm3). G= U= E= S=
M= g, Length= 9.36 cm
Width= 7.23 cm, Thickness0.95 mm
Density= ? (g/cm3)
Density= mass
volume
Volume = l x w x h
0.95 mm x 1 m x 102 cm
103 mm 1 m
=0.095 cm3
Density= g
6.4 cm3
= or
9.0 g/cm3

6. Learning Check
Osmium is a very dense metal. What is its density in g/cm3 if g of the metal occupies a volume of 2.22cm3? A) 2.25 g/cm3 B) 22.5 g/cm3 C) 111 g/cm3

7. Volume/Water Displacement
A solid displaces a matching volume of water when the solid is placed in water. What is the volume of the metal object.
33 mL
25 mL
V= 33mL-25mL
8 mL

8. What is the density (g/cm3) of 48 g of a metal if the metal raises the level of water in a graduated cylinder from 25 mL to 33 mL?
G U E S S
M= 48 g
V= 8 mL
V= 8 cm3
D= g/cm3
D= mass
Volume
D= 48 g
8cm3
D= 6.0 cm3

9. Learning Check
Which diagram represents the liquid layers in the cylinder?
(K) Karo syrup (1.4 g/mL),
(V) vegetable oil (0.91 g/mL,)
(W) water (1.0 g/mL)
A) B) C) K V W V W K W V K

10. Learning Check A) B.) C) I W V W I V V W I
Which diagram represents layers in the cylinder? Each layer represent a different phase or state of matter
(I) Solid water (ice) (0.9 g/mL),
(V) Water vapor (0.84 g/mL,)
(W) liquid water (1.0 g/mL)
A) B.) C) I W V W V I V W I

11. Density is INTENSive it never changes
The density of an object never changes.
1.0 g/mL
4.0 g/cm3
4.0 g/cm3
4.0 g/cm3
What is the density of the small beaker of water?
What is the density of each small box?

12. Exit Ticket
The table below shows some information for four different elements.
A cube of an unknown element has a shiny silvery color. The side of the cube measures 3.0 cm and the cube has a mass of g. Based on the information provided, which element makes up the cube?
A barium B beryllium C chromium D phosphorous