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Worksheetswater chemistry
Total questions: 12
Worksheet time: 10mins
Name
Class
Date
1.
Water is a universal solvent
a)
True
b)
False
2.
What is water made of?
a)
Water
b)
Liquid
c)
Hydrogen and oxygen
d)
Blue
3.
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
4.
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
5.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
6.
A charged atom
a)
Ion
b)
Isotope
c)
Electron Cloud
d)
Quark
7.
Which particle is negatively charged?
a)
proton
b)
atom
c)
neutron
d)
electron
8.
How many electrons does this picture show?
a)
4
b)
5
c)
6
d)
3
9.
How do covalent bonds form?
a)
Donating & receiving valence e- between atoms.
b)
Opposite slight charges attract each other between compounds.
c)
Scientists are still not sure how they form.
d)
Sharing valence e- between atoms.
10.
What do we call a covalent bond where electrons are shared UNEVENLY or UNEQUALLY?
a)
Ionic
b)
Polar Covalent
c)
Nonpolar Covalent
d)
Van der Waals Force
11.
What is a valence electron?
a)
The sum of neutrons and protons.
b)
The # of electrons in the last shell.
c)
A type of bond.
d)
A popular compound.
12.
Atoms are most stable when their outer shell is complete.
a)
true
b)
false
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