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WorksheetsChemistry 20 Course Review
Total questions: 13
Worksheet time: 10mins
Name
Class
Date
1.
Acetone, C3H6O, is an active ingredient in nail polish remover. Acetone's chemical formula shows that
a)
acetone is made of 3 elements with 10 atoms in each molecule
b)
acetone is acidic because it contains the element hydrogen
c)
acetone is made up of both nonmetal and metal elements
d)
acetone is flammable or burns in air to produce carbon dioxide gas and hydrogen
2.
The substance that would be expected to for a precipitate as a product of a chemical reaction is
a)
silver hydroxide
b)
calcium sulfide
c)
sodium phosphate
d)
lithium chloride
3.
According to the Lewis Dot model of the atom, the number of bonding electrons in a nitrogen atom is
a)
1
b)
2
c)
3
d)
5
4.
The molecular shapes for carbon tetrachloride and hydrogen bromide are
a)
linear and angular
b)
tetrahedral and V-shaped
c)
tetrahedral and linear
d)
pyramidal and linear
5.
The substance that contains London forces, dipole-dipole forces and hydrogen bonding between molecules is
a)
hydrogen sulfide
b)
phosphorus trihydride
c)
ammonia
d)
methane
6.
For a gas, which pair of variables are inversely proportional to one another if all other conditions remain constant?
a)
P and T
b)
P and V
c)
V and T
d)
n and T
7.
Which measurement has the highest pressure?
a)
3.0 mm Hg
b)
3.0 atm
c)
3.0 kPa
d)
3.0 Pa
8.
Which of the following is NOT an observed property of all gases?
a)
Gases are compressible and can liquefy under pressure
b)
Gases have variable shape and volume
c)
Gases expand to fill their containers
d)
Gases have a density greater than 1.00 g/mol
9.
A solution that conducts electricity contains a(n)
a)
acid
b)
base
c)
salt
d)
electrolyte
10.
A solution that has a relatively large quantity of solute dissolved in the solvent is
a)
heterogenous
b)
dilute
c)
concentrated
d)
dissociated
11.
What piece of lab equipment is used for preparing a precise volume of a solution?
a)
erlenmeyer flask
b)
beaker
c)
volumetric flask
d)
graduated cylinder
12.
If a pH meter were placed in a 1.4 mol/L solution of nitric acid, the reading would be:
a)
1.4
b)
14.15
c)
-0.15
d)
0.15
13.
The pH scale measures
a)
level of saltiness of a solution
b)
concentration of OH-(aq) ions
c)
concentration of acids
d)
concentration of H3O+(aq) ions
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