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WorksheetsB / HB General Chemistry Review
Total questions: 39
Worksheet time: 36mins
Name
Class
Date
1.
Which type of reactions require energy to build large molecules from smaller ones?
a)
anabolic
b)
catabolic
2.
Which type of reactions release energy when they break down large molecules into smaller ones?
a)
anabolic
b)
catabolic
3.
Animals, fungi, and most protists are unable to make their own food. Which term describes these organisms?
a)
heterotrophs
b)
producers
c)
chemoautotrophs
d)
autotrophs
4.
Which of the following is an anabolic pathway that builds large molecules from smaller molecules?
a)
photosynthesis
b)
cellular respiration
5.
Which of the following is a catabolic pathway that breaks down large molecules into smaller molecules?
a)
photosynthesis
b)
cellular respiration
6.
Which term is used to describe all of the chemical reactions that occur in the body?
a)
thermodynamics
b)
metabolism
c)
anabolic
d)
catabolic
7.
_______ and _______ are located inside of the nucleus.
a)
Electrons and Protons
b)
Protons and Neutrons
c)
Neutrons and Electrons
8.
What charge does a neutron have?
a)
+1
b)
-1
c)
No charge
9.
Carbon has an atomic number of 6. What can you conclude about carbon from this fact?
a)
It has six protons
b)
It has six neutrons
c)
It has six electrons
d)
It has six positrons
10.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
11.
The mass number of an element that has18 protons, 18 electrons, and 19 neutrons is _____.
a)
12.5
b)
13
c)
25
d)
37
12.
Where on the periodic table are the metalloids found?
a)
Right Side
b)
Along the Zig Zag Line
c)
Right Side
13.
All the elements on the elements on the right of the periodic table are called...
a)
Metals
b)
Metalloids
c)
Nonmetals
14.
All matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
15.
Which subatomic particles can get transferred from one atom to another?
a)
protons
b)
neutrons
c)
electrons
16.
Which of these elements is a metal?
a)
argon
b)
carbon
c)
iron
d)
hydrogen
17.
If I gain electrons I become
a)
Positive because I've added to my atom
b)
negative because I've added electrons
c)
same because i'm balanced
d)
equal because now I have electrons
18.
How many electrons would an atom of Krypton have?
a)
83.80
b)
36
c)
12
d)
none
19.
The four organic compounds found in living things are?
a)
Carbohydrates, Lipids, Nucleic Acids, and Oxygen
b)
Carbohydrates, Lipids, Proteins, and Carbon
c)
Carbohydrates, Lipids, Proteins, Nucleic Acids
d)
Carbon, Lipids, Proteins, Nucleic Acids
20.
Which of the following represents a chemical change?
a)
tearing paper in half
b)
melting ice into water
c)
roasting a marshmallow
d)
chopping wood
21.
A(n) _____ is a unique substance that forms when two or more elements combine chemically.
a)
element
b)
compound
c)
mixture
d)
all of the above
22.
The properties of compounds are ______________________ the elements that form them.
a)
the same as
b)
more intense than
c)
different from
d)
less visible than
23.
A substance that undergoes a(n) _____ change becomes a new kind of substance.
a)
large
b)
physical
c)
chemical
d)
state of matter
24.
The substances on the left of the yields arrow that start a chemical reaction are called _____.
a)
reactants
b)
products
c)
reactors
d)
ingredients
25.
The substances on the right side of the yields arrow that are produced in a chemical reaction are called _____.
a)
reactants
b)
products
c)
reactors
d)
ingredients
26.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction
27.
What type of reaction is illustrated below?
2HI --> H2 + I2
2HI --> H2 + I2
a)
synthesis
b)
decomposition
c)
single replacement
d)
double replacement
28.
Which statement is true of ionic compounds?
a)
They are electrically neutral when dissolved in water
b)
They are good conductors as solids
c)
They are formed of metals and nonmetals bonded together
d)
They are made by sharing electrons
29.
In the process of ionic bonding, ions come together because
a)
opposite charges repel
b)
positive and negative ions attract
c)
salt is magnetic
d)
like charges attract each other
30.
_______________ compounds share electrons.
a)
ionic
b)
covalent
c)
metallic
d)
acidic
31.
Most of the nonmetals on the periodic table are located...
a)
on the left side
b)
at the bottom
c)
on the right side
d)
in the middle
32.
Why is water NOT on the periodic table?
a)
It is naturally occuring
b)
It is a compound, not an element
c)
It exists as a solid, a liquid, and a gas
d)
Its chemical formula doesn't fit
33.
Na + Cl2 --> NaCl is what type of reaction?
a)
Synthesis
b)
Decomposition
c)
Single replacement
d)
Double replacement
34.
When an atom loses a valence electron, it becomes a(n) _____________ ion.
a)
positive
b)
negative
c)
neutral
d)
polyatomic
35.
What property of water molecules causes surface tension and cohesion?
a)
Covalent bonds
b)
Bent shape
c)
All non-metal atoms
d)
Polarity
36.
Chemical reactions always involve energy
a)
TRUE
b)
FALSE
37.
What best describes metabolism?
a)
sum of all biochemical reactions
b)
ability to turn food into energy easily
c)
ability to build muscle
d)
ability to turn fat into energy
38.
Which of these is not a characteristic of anabolic processes?
a)
endothermic reaction in organisms
b)
build molecules
c)
usually absorbs/requires energy
d)
break down molecules
39.
Bond created by the weak attraction of a slightly positive hydrogen atom to a slightly negative portion of another molecule
a)
polar molecule
b)
solution
c)
adhesion
d)
hydrogen bond
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