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Properties Of Water
Test Description: Polarity, capillarity, adhesion, cohesion, surface tension, surfactant, universal solvent, states of matter, mixtures, and solutions.
Instructions: Answer all questions to get your test result.
1) A water molecule is composed of...
A
1 Oxygen and 1 Hydrogen
B
1 Oxygen and 2 Hydrogens
C
2 Oxygens and 1 Hydrogen
D
2 Oxygens and 1 Hydrogen
2) Define cohesion
A
Water molecules stick to other water molecules
B
Water molecules stick to other substances
3) Why is water called a polar molecule?
A
It is a neutral molecule; water has not charge.
B
It has unequal sharing of electrons giving water the ability to act like a magnet.
4) Water stuck to a glass window is an example of
A
Adhesion
B
Surface tension
C
Cohesion
D
Capillary action
5) The Oxygen atom in a water molecule is slightly
A
positive
B
negative
6) The 2 Hydrogens in a water molecule are slightly
A
positive
B
negative
7) Water moving upward against the force of gravity inside the root of a plant is known as
A
Cohesion
B
Capillary action
C
Adhesion
D
Surface tension
8) What does a surfactant do?
A
It allows for water molecules to stick together
B
It lowers the surface tension by weakening Hydrogen bonds
C
It helps water climb upwards
D
It helps water stick to other substances
9) What is a molecule?
A
A substance that weakens Hydrogen bonds at the surface of a liquid.
B
A substance made up of two ore more atoms
C
The curved upper surface of a liquid in a graduated cylinder.
D
A substance made up of two or more different types of atoms.
10) What is a compound?
A
A substance made up of two ore more atoms
B
The curved upper surface of a liquid in a graduated cylinder.
C
A substance made up of two or more different types of atoms.
D
A substance that weakens Hydrogen bonds at the surface of a liquid.
11) Water can dissolve many substances! This is why water is known as
A
meniscus
B
universal solvent
C
surfactant
D
surface tension
12) The pH of water is
A
4
B
5
C
9
D
7
13) Which state of matter has the molecules held in a rigid structure (molecules cannot move freely)?
A
liquid
B
solid
C
gas
14) In which two states of matter can the molecules move freely?
A
solid and gas
B
solid and liquid
C
liquid and gas
15) Which two states of matter have a definite volume?
A
solid and liquid
B
liquid and gas
C
solid and gas
16) Surface tension is...
A
when water sticks to other substances
B
when water separates from other water molecules
C
when water climbs upwards against gravity
D
cohesion at the surface of water
*select an answer for all questions
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