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Science 6 Chapter 5 Test Set A
Test Description: Acids and Bases
Instructions: Answer all questions to get your test result.
1) A liquid mixture in which particles can be seen and easily separated by settling or filtration is a
A
solution
B
solvent
C
solute
D
suspension
2) How is a solute different from a solvent in a solution?
A
The solute is present in a smaller amount.
B
The solute is a solid and the solvent is a liquid.
C
The solute is present in a greater amount.
D
The solute is a liquid and the solvent is a gas.
3) How can a scientist safely tell whether an unknown solution is salt in water or sugar in water?
A
by tasting the solution
B
by smelling the solution
C
by filtering the solution
D
by testing the electrical conductivity of the solution
4) When a solid compound dissolves in water,
A
it always conducts electricity
B
its particles surround individual water molecules
C
it breaks up into individual crystals
D
each of its particles becomes surrounded by water molecules
5) Weak tea is an example of a
A
suspension
B
concentrated solution
C
dilute solution
D
solvent
6) Which is a characteristic property of acids?
A
They taste bitter.
B
They do not react with metals.
C
They turn red litmus paper blue.
D
They turn blue litmus paper red.
7) What is one way to increase the solubility of sugar in water?
A
Chill the water.
B
Increase the amount of sugar.
C
Decrease the amount of water.
D
Heat the water.
8) When you add so much solute that no more dissolves, you have a(n)
A
suspension
B
saturated solution
C
neutralization
D
unsaturated solution
9) In a water solution, how do acids differ from bases?
A
Hydrogen ions (H+) remain dissolved, but hydroxide ions (OH-) do not.
B
Acids form hydrogen ions (H+), while bases form hydroxide ions (OH-)
C
Acids turn litmus blue, while bases turn litmus red.
D
Acids form salts, but bases do not.
10) Neutralization is a reaction between a(n)
A
base and a salt
B
salt and water
C
acid and a base
D
acid and a metal
*select an answer for all questions
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