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WorksheetsProperties of Water pt 1
Total questions: 10
Worksheet time: 20mins
Name
Class
Date
1.
What is water?
a)
An atom
b)
A molecule composed of 2 parts Oxygen and one part Hydrogen
c)
A molecular compound composed of 2 parts Hydrogen and one part Oxygen
d)
A pure substance composed of 2 parts Hydrogen and one part Oxygen
2.
What is the chemical formula for water?
a)
H20
b)
h2o
c)
H2O2
d)
H2O
3.
What is the gaseous form of water called?
a)
Steam
b)
Water vapor
c)
Vapor
d)
Water mist
4.
What is adhesion?
a)
Water's ability to stick to itself
b)
Water's ability to stick to other substances
c)
The strength of the cohesion of all the water molecules combined
d)
Tape, glue and other adhesives
5.
What is cohesion?
a)
Water's ability to stick to itself
b)
Water's ability to stick to other substances
c)
The strength of the cohesion of all the water molecules combined
d)
Tape, glue and other adhesives
6.
Why does ice float on water?
a)
When it freezes it becomes less dense
b)
When it freezes it becomes more dense
c)
When it freezes its density stays the same
7.
Water is a polar molecule, which means it has a positive and a negative side. Hydrogen bonds form when:
a)
The positive end of one water molecule bonds to the positive end of another water molecule.
b)
The negative end of one water molecule bonds to the negative end of another water molecule.
c)
The positive end of one water molecule bonds to the negative end of another water molecule.
8.
The ability of water molecules to stick to each other, creating surface tension is called:
a)
Cohesion
b)
Adhesion
c)
Insulation
d)
Ph
9.
True or False:
Water exists in the following states:
-Solid
-Liquid
-Gas
a)
True
b)
False
10.
Water striders can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why?
a)
The insects are light enough so they do not break the hydrogen bonds holding the water molecules together
b)
The insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.
c)
The insect’s feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water’s surface.
d)
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
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