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DENSITYDENSITY – THE MASS OF ONE CM – THE MASS OF ONE CM33 OR ONE ML OF A SUBSTANCEOR ONE ML OF A SUBSTANCE
Density mass (g)volume (cm3)
Density mass (g)volume (cm3)
Mercury
13.6 g/cm13.6 g/cm33 21.5 g/cm21.5 g/cm33
Aluminum
2.7 g/cm2.7 g/cm33
Platinum
ProblemProblem: : A piece of copper has a mass of 57.54 A piece of copper has a mass of 57.54 g. It is 9.36 cm long, 7.23 cm wide, and 0.95 mm g. It is 9.36 cm long, 7.23 cm wide, and 0.95 mm thick. Calculate density (g/cmthick. Calculate density (g/cm33).).
Density mass (g)volume (cm3)
Density mass (g)volume (cm3)
ProblemProblem A piece of copper has a mass A piece of copper has a mass of 57.54 g. It is 9.36 cm long, 7.23 cm of 57.54 g. It is 9.36 cm long, 7.23 cm wide, and 0.95 mm thick. Calculate wide, and 0.95 mm thick. Calculate density (g/cmdensity (g/cm33).).
G=U=E=S=S=
M= 57.54 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
Volume = 9.36 cm x7.23 cm x 0.095 cm = 6.4 cm3
Density= 57.54 g 6.4 cm3
=8.990625 or 9.0 g/cm3
PROBLEM: MERCURY (HG) HAS A DENSITY OF 13.6 PROBLEM: MERCURY (HG) HAS A DENSITY OF 13.6 G/CMG/CM33. WHAT IS THE MASS OF 95 ML OF HG IN . WHAT IS THE MASS OF 95 ML OF HG IN GRAMS? GRAMS?
PROBLEM: MERCURY (HG) HAS A DENSITY OF 13.6 PROBLEM: MERCURY (HG) HAS A DENSITY OF 13.6 G/CMG/CM33. WHAT IS THE MASS OF 95 ML OF HG IN . WHAT IS THE MASS OF 95 ML OF HG IN GRAMS? GRAMS?
PROBLEM: MERCURY (HG) HAS A DENSITY OF 13.6 PROBLEM: MERCURY (HG) HAS A DENSITY OF 13.6 G/CMG/CM33. WHAT IS THE MASS OF 95 ML OF HG?. WHAT IS THE MASS OF 95 ML OF HG?
PROBLEM: MERCURY (HG) HAS A DENSITY OF 13.6 PROBLEM: MERCURY (HG) HAS A DENSITY OF 13.6 G/CMG/CM33. WHAT IS THE MASS OF 95 ML OF HG?. WHAT IS THE MASS OF 95 ML OF HG?
G=U=E=S=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
LEARNING CHECKLEARNING CHECKOsmium is a very dense metal. What is its Osmium is a very dense metal. What is its
density in g/cmdensity in g/cm3 3 if 50.00 g of the metal occupiesif 50.00 g of the metal occupies
a volume of 2.22cma volume of 2.22cm33??
A) 2.25 g/cmA) 2.25 g/cm33
B)B) 22.5 g/cm22.5 g/cm33
C)C) 111 g/cm111 g/cm33
G=U=E=S=S=
VOLUME/WATER DISPLACEMENTVOLUME/WATER DISPLACEMENT
A solid displaces a matching volume of water when the A solid displaces a matching volume of water when the solid is placed in water. What is the volume of the metal solid is placed in water. What is the volume of the metal object. object.
33 mL33 mL
25 mL 25 mL
V= 33mL-25mL
8 mL
What is the density (g/cmWhat is the density (g/cm33) of 48 g of a metal if the metal raises ) of 48 g of a metal if the metal raises the level of water in a graduated cylinder from 25 mL to 33 mL? the level of water in a graduated cylinder from 25 mL to 33 mL?
G U E S SM= 48 g V= 8 mLV= 8 cm3
D= g/cm3
D= mass
Volume D= 48 g 8cm3
D= 6.0 cm3
LEARNING CHECKLEARNING CHECK
Which diagram represents the liquid layers in the cylinder?Which diagram represents the liquid layers in the cylinder?
(K) Karo syrup (1.4 g/mL),(K) Karo syrup (1.4 g/mL),
(V) vegetable oil (0.91 g/mL,) (V) vegetable oil (0.91 g/mL,)
(W) water (1.0 g/mL)(W) water (1.0 g/mL)
A)A) B)B) C) C)
K
K
W
W
W
V
V
V
K
LEARNING CHECKLEARNING CHECK
Which diagram represents layers in the cylinder? Each layer Which diagram represents layers in the cylinder? Each layer represent a different phase or state of matterrepresent a different phase or state of matter
(I) Solid water (ice) (0.9 g/mL), (I) Solid water (ice) (0.9 g/mL),
(V) Water vapor (0.84 g/mL,)(V) Water vapor (0.84 g/mL,)
(W) liquid water (1.0 g/mL)(W) liquid water (1.0 g/mL)
A)A) B.) B.) C) C)
I
I
V
V
V
W
W
W
I
SOLUTIONSOLUTION
(K) Karo syrup (1.4 g/mL), (V) vegetable oil (0.91 g/mL,) (K) Karo syrup (1.4 g/mL), (V) vegetable oil (0.91 g/mL,) (W) water (1.0 g/mL)(W) water (1.0 g/mL)
1)1)
K
W
V
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 194.4 g. Based on the information provided, which element makes up the cube?
• A barium B beryllium C chromium D phosphorous
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