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WorksheetsChemistry Final Exam
Total questions: 82
Worksheet time: 2hrs 45mins
Name
Class
Date
1.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
2.
If an atom has 3 electrons, how many protons does it have?
a)
1
b)
2
c)
4
d)
3
3.
The subatomic particle with a negative charge is the
a)
electron
b)
proton
c)
neutron
d)
nucleus
4.
Elements with similar properties
a)
Periods
b)
Groups
5.
Where are electrons?
a)
Nucleus
b)
Orbits
6.
On Periodic Table, how are elements ordered?
a)
color
b)
shape
c)
atomic number
d)
alphabetically
7.
Oxygen gas
a)
O2
b)
O3
c)
O
8.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
9.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
10.
In which region would the nonmentals be found?
a)
1
b)
4
c)
3
d)
5
11.
Something that is made up of only one kind of atom is known as _________________.
a)
a molecule
b)
a compound
c)
an element
d)
a proton
12.
A "group" is a ____________ on the periodic table.
a)
column
b)
row
13.
A "period" is a ____________ on the periodic table.
a)
column
b)
row
14.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
15.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
16.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
17.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
18.
When you break a cracker into pieces it is a
a)
Chemical change
b)
Physical change
c)
Chemical Weathering
d)
Physical Weathering
19.
How many atoms of Hydrogen are in this compound
a)
1
b)
2
c)
3
d)
4
20.
How many elements are in the this compound?
H2CO4N5
H2CO4N5
a)
11
b)
4
c)
12
d)
5
21.
How many TOTAL atoms are in this compound?
H2C3O4N5
H2C3O4N5
a)
5
b)
14
c)
15
d)
19
22.
5H2O
How many atoms of Hydrogen?
How many atoms of Hydrogen?
a)
2
b)
7
c)
10
d)
5
23.
What does not produce carbon dioxide?
a)
Photosynthesis
b)
Burning Fossil Fuels
c)
Animal respiration
d)
Plants decaying
24.
Combustion is another word for _______________.
a)
a train
b)
a bus
c)
a dog
d)
burning
25.
Which one of these does not add CO2 to the atmosphere?
a)
cooking with gas
b)
planting trees
c)
burning wood
d)
riding in a bus
26.
When humans burn fossil fuels, most of the carbon quickly enters the as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
27.
oxygen is a gas produced by _ and used by _
a)
plants and animals
b)
photosynthesis and carbon dioxide
c)
animals and plants
d)
carbon dioxide and photosynthesis
28.
Organisms that do not decompose can be buried and become what?
a)
water
b)
nutrients
c)
air
d)
fossil fuels
29.
Carbon can be found in...?
a)
The atmosphere
b)
Inside of the Earth
c)
Fossil fuels
d)
All of the above!
30.
Which of the following would most likely qualify as a macromolecule?
a)
Protein
b)
RNA
c)
Cellulose
d)
All of these are macromolecules
31.
Which of the following is NOT a carbohydrate?
a)
Glucose
b)
Fatty acid
c)
Cellulose
d)
Glycogen
32.
How many amino acids are there?
a)
4
b)
16
c)
20
d)
64
33.
SPONCH means...
a)
Sodium, Potassium, Odium, Nitrogen, Cadmium, Helium
b)
Sulfur, Phosphorous, Oxygen, Nitrogen, Carbon, Hydrogen
c)
Sulfur, Potassium, Oxygen, Nitrogen, Carbon, Hydrogen
d)
Sodium, Phosphorous, Oxygen, Neon, Carbon, Hydrogen
34.
The building block of all macro-molecules is
a)
Carbon
b)
Sulfur
c)
Hydrogen
d)
Nitrogen
35.
"Double helix" describes the structure of a molecule of...
a)
DNA
b)
RNA
c)
Starch
d)
Monosaccharide
36.
Glucose is a...
a)
Protein
b)
Disaccharide
c)
Nucleic Acid`
d)
Monosaccharide
37.
What does letter a stand for?
a)
Enzyme
b)
Substrate
c)
Active Site
d)
Products
38.
What does letter b stand for?
a)
Enzyme
b)
Substrate
c)
Active Site
d)
Products
39.
What does letter c stand for?
a)
Enzyme
b)
Substrate
c)
Active Site
d)
Products
40.
When did The Big Bang happen
a)
7 billion years ago
b)
13.5-14 billion years ago
c)
800 billion years ago
41.
What are stars?
a)
Huge spheres of hot gas that emits light and other radiation
b)
Bright spheres made of different types of rock and metals
c)
Large reflective objects in space
d)
Satellites that orbit around planets
42.
Stars are made mostly of
a)
Hydrogen and oxygen
b)
sodium and helium
c)
oxygen and nitrogen
d)
hydrogen and helium
43.
The absolute magnitude of a star depends on its distance from Earth.
a)
True.
b)
False.
44.
The color of a star is mainly due to what?
a)
Mass
b)
Shape
c)
Size (Volume)
d)
Temperature
45.
The heaviest element a star is capable of creating is . .
a)
Carbon
b)
Nickel
c)
Iron
d)
Helium
46.
Conversion Factor 1 cal = ____J
a)
10
1000
1000
b)
1
c)
4.184
d)
4184
47.
Convert 350 J = ______ calories
a)
1464.4
b)
83.65
c)
0.350
d)
none of the above
48.
What would be the effect on the particles if more heat is supplied to the system?
a)
They would slow down
b)
They would stop moving
c)
They would speed up
d)
There would be no effect
49.
For the formula:
Q= m c ∆T
The units for specific heat are:
Q= m c ∆T
The units for specific heat are:
a)
g /J C
b)
°C/g J
c)
kJ/g
d)
J/g°C
50.
The total energy of all the particles in a substance is called:
a)
temperature
b)
thermal energy
c)
degrees
d)
mass
51.
What is the specific heat of an unknown substance if 100.0 g of it at 200.0 °C reaches an equilibrium temperature of 27.1 °C when it comes in contact with a calorimeter of water. The water weighs 75. g and had an initial temperature of 20.00 °C? (Specific heat of water is 4.18 J/g°C) (show your work)
a)
0.111 J/g°C
b)
1.29 J/g°C
c)
0.129 J/g°C
d)
22225.85 J
52.
A reaction is performed in a beaker with a temperature probe recording the temperature changes of the reaction. If the temperature began at 15.0 degrees Celsius and ended at 27.5 degrees Celsius. Is the reaction endothermic or exothermic?
a)
Exothermic
b)
Endothermic
53.
What is a calorie?
a)
a nutrient in food that provides energy to fuel your body
b)
the amount of heat energy needed to increase the temperature of 1 kilogram of water by 1 °C
c)
the amount of heat energy needed to increase the temperature of 1 gram of water by 1 °C
d)
the transfer of energy from potential energy to heat
54.
What is energy?
a)
the ability to do work
b)
how much power a system has.
c)
the flow of heat
d)
how awake a person feels
55.
Are the atoms more stable when they are bonded together or when they are apart?
a)
Bonded Together
b)
Apart
56.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of nuetrons
c)
The transfer of electrons
d)
None Of the above
57.
What happens when the sodium atom loses an electron?
a)
It become negatively charged
b)
It become positively charged
c)
none
58.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
59.
What happens when an atom loses an electron?
a)
Neutral (no charge)
b)
Positive charge
c)
Negative charge
60.
What elements generally make an ionic bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
61.
What elements generally make a covalent bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
62.
What is a valence electron?
a)
an electron that is found in the outermost shell of an atom.
b)
an electron found in the innermost shell of an atom.
c)
an electron found in the middle shell.
63.
What is the number of valence electrons for Oxygen?
a)
8
b)
6
c)
2
d)
1
64.
How many valence electrons in this structure?
a)
6
b)
5
c)
4
d)
7
65.
Is Hydrogen considered a metal or a non-metal?
a)
Metal
b)
Non-metal
66.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
67.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
68.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
69.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
70.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
71.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
72.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
73.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
74.
The lower the pH, the greater the concentration of :
a)
OH-
b)
H+
75.
Neutralization happens when acids and base combine
a)
True
b)
false
76.
Litmus paper is an indicator of acids and bases, it turns red for bases.
a)
True
b)
false
77.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
78.
What goes in the missing blanks?
SnO2 + __ H2 → Sn + __ H2O
SnO2 + __ H2 → Sn + __ H2O
a)
5
b)
1
c)
3
d)
2
79.
What is the part of the chemical equation in green called?
Fe + S --> FeS
Fe + S --> FeS
a)
products
b)
reactants
c)
yield
d)
chemical formula
80.
What is the little number after an element in a chemical equation called.
Example: H2
Example: H2
a)
Coefficient
b)
Subscript
c)
Atom
d)
Equation
81.
In this image, what are the information to the right of the arrow (in black) is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
82.
Which chemical reaction forms Carbon Dioxide and Water?
a)
Synthesis
b)
Single Replacement
c)
Combustion
d)
Decomposition
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