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WorksheetsWATER
Total questions: 20
Worksheet time: 18mins
Name
Class
Date
1.
Why can water have no net charge but have slight charges in different parts of the molecule?
a)
The oxygen end is slightly negative and the hydrogen end is slightly positive
b)
The hydrogen end is slightly negative and the oxygen end is slightly positive
c)
The hydrogen and oxygen ends change in polarity
d)
Because it is hydrophobic
2.
molecule in which opposite ends have opposite electric charges
a)
cohesion
b)
polar molecule
c)
hydrogen bond
d)
solution
3.
A molecule with electrically charged areas is called a _______________.
a)
magnet
b)
polar molecule
c)
solution
d)
electrical molecule
4.
Which end of the water molecule has a slightly positive charge?
a)
the oxygen end
b)
the hydrogen end
c)
both ends are slightly positive
d)
neither end is positive
5.
Water is a universal solvent because it...
a)
It can be found anywhere
b)
It freezes when it gets cold
c)
floats when frozen
d)
Dissolves most substances
6.
Is Water Polar?
a)
Yes
b)
No
7.
A possible explanation to a problem that has not yet been tested.
a)
data
b)
theory
c)
hypothesis
d)
fact
8.
This variable in an experiment is the one being deliberately changed by the scientist.
a)
dependent variable
b)
independent variable
c)
data
d)
control group
9.
In a controlled experiment, how many independent variables can be worked with at a time?
a)
one
b)
none
c)
two or more
d)
how ever many makes sense.
10.
Mr. S. sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.
a)
distance traveled by the ball
b)
height of the ramp
c)
mass of the ball
d)
weight of the ball
11.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
12.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
13.
an atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
14.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
15.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
16.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
17.
"C" is the element symbol for which element?
a)
calcium
b)
carbon
c)
chlorine
d)
cadmium
18.
What is the atomic symbol for sodium?
a)
Na
b)
So
c)
NaCl
d)
S
19.
What are the 3 particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
20.
Carbon
a)
C
b)
Ca
c)
Cb
d)
Cn
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