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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
2 Oxygens and 1 Hydrogen
B
2 Oxygens and 1 Hydrogen
C
1 Oxygen and 2 Hydrogens
D
1 Oxygen and 1 Hydrogen
2) Define cohesion
A
Water molecules stick to other substances
B
Water molecules stick to other water molecules
3) Why is water called a polar molecule?
A
It has unequal sharing of electrons giving water the ability to act like a magnet.
B
It is a neutral molecule; water has not charge.
4) Water stuck to a glass window is an example of
A
Surface tension
B
Capillary action
C
Cohesion
D
Adhesion
5) The Oxygen atom in a water molecule is slightly
A
negative
B
positive
6) The 2 Hydrogens in a water molecule are slightly
A
negative
B
positive
7) Water moving upward against the force of gravity inside the root of a plant is known as
A
Adhesion
B
Cohesion
C
Capillary action
D
Surface tension
8) What does a surfactant do?
A
It helps water stick to other substances
B
It helps water climb upwards
C
It lowers the surface tension by weakening Hydrogen bonds
D
It allows for water molecules to stick together
9) What is a molecule?
A
A substance made up of two ore more atoms
B
A substance made up of two or more different types of atoms.
C
The curved upper surface of a liquid in a graduated cylinder.
D
A substance that weakens Hydrogen bonds at the surface of a liquid.
10) What is a compound?
A
A substance that weakens Hydrogen bonds at the surface of a liquid.
B
A substance made up of two ore more atoms
C
A substance made up of two or more different types of atoms.
D
The curved upper surface of a liquid in a graduated cylinder.
11) Water can dissolve many substances! This is why water is known as
A
surfactant
B
universal solvent
C
surface tension
D
meniscus
12) The pH of water is
A
4
B
5
C
7
D
9
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 liquid
B
solid and gas
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
cohesion at the surface of water
B
when water sticks to other substances
C
when water separates from other water molecules
D
when water climbs upwards against gravity
*select an answer for all questions
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