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WorksheetsChemistry Fall Semester Exam Review 2023
Total questions: 34
Worksheet time: 55mins
Carbon has an atomic number of 6 and a mass number of 12. How many protons, neutron, and electrons are in this carbon atom?
12 protons
12 electrons
18 neutrons
6 protons
12 electrons
12 neutrons
6 protons
6 electrons
6 neutrons
6 protons
6 electrons
12 neutrons
Sodium has 11 protons, 11 electrons, and 12 neutrons. What is its mass number?
22
34
23
Group 17 elements have what ionic charge?
+7
-7
-1
+1
How many valence electrons does oxygen have?
16
8
6
2
Name the following: FeO
iron oxide
iron (III) oxide
iron (II) oxide
ferric oxide
Name the following: CaCO3
calcium carbon oxide
calcium carbide
calcium oxide
calcium carbonate
Name the following: CO2
carbon oxide
carbide oxide
monocarbon dioxide
carbon dioxide
Write the formula for the following: barium chromate
BaCrO4
BaCrO
BaCO
BaCr4
Write the formula for the following: sulfur trioxide
S3O
SO3
S3O3
S3O
Balance the following:
___Ca(OH)2 + ___BaF2 --> ___Ba(OH)2 + ___CaF2
1, 1, 2,1
1,1,1,1
2,2,1,1
1,2,2,1
Balance the following:
___CaCl2 + ___NaNO3 --> ___Ca(NO3)2 + ___NaCl
1, 2, 1, 2
1,1,2,2
2,1,2,1
1,1,1,1
Identify the type of reaction:
___Ca(OH)2 + ___BaF2 --> ___Ba(OH)2 + ___CaF2
single displacement
combustion
synthesis
double displacement
Identify the following reaction type.
2Ca + Cl2 --> 2CaCl2
combustion
synthesis
decomposition
single displacement
How many moles are in a 450.0 gram sample of NaCl?
1.65 mol
0.86 mol
7.76 mol
5.45 mol
How many moles of CaO can be formed when 4.56 moles of O2 react with excess Ca according to the equation
2 Ca + O2 --> 2 CaO
9.12 mol
5.67 mol
6.56 mol
1.29 mol
Using the equation below, determine how many grams of oxygen are required to react with 20.0 g of calcium.
2 Ca + O2 --> 2 CaO
The molar mass of O2 is 32 g/mol and the molar mass of Ca is 40 g/mol
32 g
40 g
12 g
8 g
A sample of dry air at 100 ° C has a volume of 5.3 liters. What is the volume of the sample if the temperature is increased to 212° C when the pressure is kept constant?
6.89 L
8.98 L
5.46 L
4.07 L
What is the volume of 5.6 mol of oxygen gas at 50.0° C and 3 atm?
42.4 L
49.5 L
56 L
43.4 L
Gold has a density of 19.32 g/cm3. What is the mass of a 34.6 cm3 piece of gold?
1.79 g
0.558 g
800 g
668.5 g
What is the molarity of a 5.0 liter solution containing 25 mol of KCl?
0.56 M
0.0676 M
0.338 M
5.0 M
What is the percent composition of sulfur in aluminum sulfate Al2(SO4)3?
28 %
16 %
56 %
36 %
Matter that has definite and uniform composition is called:
compound
volume
substance
space
The study of the composition of substances, their properties, and how they undergo change is called:
physics
chemistry
biology
ecology
The amount of space an object takes up is called:
volume
mass
perimeter
area
The measurement of the amount of matter is called:
volume
mass
perimeter
area
The study of carbon containing compounds is called ____ chemistry.
inorganic
physical
analytical
organic
An experiment with plants is conducted and it is found that one of the plants grew to 3 meters in height. What type of data is this?
quantitative
qualitative
conclusive
variable
A experiment produces a yellow substance that has a distinct odor. What type of data is this?
quantitative
qualitative
variable
conclusive
Which measurement is dependent on gravity?
mass
weight
volume
area
If I floss more, then I will have fewer cavities. What is the independent variable?
Number of cavities
Amount of flossing
Type of floss used
Amount of brushing
Shaquille O'Neal is 147 kilograms. What type of measurement is this?
volume
mass
temperature
length
Precision is when experimental values are close to one another, verifying the reliability of the experimental procedures.
True
False
Convert 32 degrees Celsius to Kelvin.
0 K
212 K
241 K
305 K
The measurement of the amount of mass in a unit of volume is called __.
mass
volume
density
accuracy
