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WorksheetsWater
Total questions: 15
Worksheet time: 15mins
Name
Class
Date
1.
Describe cohesion.
a)
Water molecules attracted to other substances.
b)
Water molecules climbing upwards against the force of gravity.
c)
Water molecules dissolving many substances because of its polarity.
d)
Water molecules attracted to other water molecules.
2.
What two elements make up water?
a)
Helium and oxygen
b)
Hydrogen and oxygen
c)
helium and carbon
d)
oxygen and carbon
3.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
4.
Attractions between water molecules are called
a)
Covalent bonds
b)
Ionic bonds
c)
Polar bonds
d)
Hydrogen bonds
5.
molecule in which opposite ends have opposite electric charges
a)
cohesion
b)
polar molecule
c)
hydrogen bond
d)
solution
6.
Which characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?
a)
adhesion
b)
surface tension
c)
solvent properties
d)
nonpolar
7.
What is water's technical name
a)
NaCl
b)
CO2
c)
H2O
d)
H2O2
8.
Why does water move from the roots to the leaves of plants through the plants' tiny tubes?
a)
specific heat
b)
capillary action
c)
atoms
d)
density
9.
Water is a universal solvent because it...
a)
can be found anywhere.
b)
freezes when it gets cold.
c)
floats when frozen.
d)
dissolves most substances.
10.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
11.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
12.
On the pH scale higher numbers indicate
a)
acids
b)
bases
13.
What quality of water helps the Earth and organisms keep steady temperatures?
a)
magnetism
b)
high heat capacity
c)
low density
d)
capillary action
14.
What is the term for how our sweat cools us down?
a)
surface tension
b)
high heat capacity
c)
evaporative cooling
d)
freezing
15.
Ice floats, so lakes and rivers don't freeze solid, and fish can survive winter. Why does this happen?
a)
ice is less dense than water
b)
ice is more dense than water
c)
evaporative cooling
d)
surface tension
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