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WorksheetsChemical Reactions
Total questions: 28
Worksheet time: 21mins
Name
Class
Date
1.
Which identifies a substance whose particles are dissolved in a solution?
a)
solvent
b)
solute
c)
solid
d)
ion
2.
Is the following true or false.
The solution takes the state of matter of the solvent.
The solution takes the state of matter of the solvent.
a)
True
b)
False
3.
The amount of solute dissolved in a specific amount of solution.
a)
buffer
b)
concentration
c)
solubility
d)
electrolytes
4.
Solutions that hold the maximum amount of solute at a given temperature.
a)
Saturated
b)
Unsaturated
5.
Solutions that hold less than the maximum amount of solute that can be dissolved.
a)
Saturated
b)
Unsaturated
6.
Which substance is SOLUBLE (dissolves) in water?
a)
sand
b)
oil
c)
salt (sodium chloride)
d)
sulfur
7.
The best definition of SOLUTION would be
a)
any clear and colorless liquid
b)
2+ substances mixed evenly and completely
c)
a substance made of just one chemical
d)
any liquid that can pass through a filter
8.
When solute dissolves into a solvent it is called a _____________.
a)
atom
b)
solution
c)
element
d)
compound
9.
When Kool-Aid mix is light colored and tastes watery it is a _______ solution.
a)
saturated
b)
dilute
10.
When a Kool-Aid mix in water is dark in color and very sweet it is a __________ solution.
a)
concentrated
b)
dilute
11.
Which is an example of a solvent?
a)
Salt
b)
Egg whites
c)
Water
d)
Sugar
12.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
13.
The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?
a)
3
b)
11
c)
7
d)
5
14.
Many cleaning solutions are bases. Which of the following is a property of most bases?
a)
feels slippery
b)
white color
c)
can only be liquid
d)
tastes sour
15.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
16.
Which of the following word pairs correctly completes the sentence below?
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
a)
Acids; pH less than 7
b)
Acids; pH greater than 7
c)
Bases; pH greater than 7
d)
Bases; pH less than 7
17.
Tastes Sour
a)
Acids
b)
Bases
c)
Salts
d)
All
18.
In an exothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released
19.
In an endothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released
20.
Exothermic reactions...
a)
Absorb energy
b)
Release energy
c)
Release Color
d)
Absorb Color
21.
Baking bread and cooking an egg are examples of....?
a)
Endothermic processes
b)
Exothermic processes
c)
None of these
d)
Both of these
22.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
23.
Sugar dissolves in water. This is an example of....
a)
Physical Change
b)
Chemical Change
24.
Takes two small nuclei and combines them into a larger nucleus
a)
fission
b)
fusion
25.
The splitting of a nucleus into smaller nuclei is
a)
fusion
b)
fission
c)
half-life
d)
gamma radiation
26.
How do nuclear power-plants work?
a)
Fusion
b)
Half-life
c)
Fission
d)
Fusion or fission
27.
Where does fusion occur naturally?
a)
Underwater
b)
All around us
c)
In the radioactive waste
d)
On the sun
28.
Do all stars make energy through fusion?
a)
Yes
b)
No
c)
Just our sun
d)
Only large stars
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