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WorksheetsWater Chemistry
Total questions: 22
Worksheet time: 22mins
Name
Class
Date
1.
Acids have more what?
a)
OH ions
b)
OH- ions
c)
H+ ions
d)
All of the above
2.
Which types of compounds dissolve easily in water?
a)
Polar and Nonpolar
b)
Polar and Ionic
c)
Nonpolar and Ionic
d)
Covalent and Nonpolar
3.
Which of the following is LEAST likely to dissolve in water?
a)
nonpolar fats and oils
b)
polar sugar molecules
c)
salt made of a positive sodium ion and a negative chloride ion
d)
all of the substances will dissolve easily in water
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.
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
6.
Attractions between water molecules are called
a)
Covalent bonds
b)
Ionic bonds
c)
Polar bonds
d)
Hydrogen bonds
7.
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
8.
A water strider can skate along the top of a pond because:
a)
covalent bonds result in water cohesion
b)
hydrogen bonds result in water cohesion (surface tension)
c)
water striders have adapted to take advantage of water forming ionic bonds
d)
low surface tension of water
9.
Acids have more what?
a)
OH ions
b)
OH- ions
c)
H+ ions
d)
All of the above
10.
Pure water has a
a)
Neutral pH
b)
Negative pH
c)
Positive pH
d)
Both Negative and Positive pH
11.
A Compound that is being dissolved is called a
a)
Solution
b)
Solute
c)
Solvent
d)
Suspension
12.
Basic unit of matter - the smallest piece of matter known
a)
Element
b)
Atom
c)
Molecule
d)
Compound
13.
Density is...
a)
the amount of mass in an object
b)
the amount of space an object takes up
c)
the amount of mass in a given space
d)
the weight of an object
14.
Negatively charged part of an atom located in levels outside the nucleus
a)
Proton
b)
Neutron
c)
Electron
d)
Neutron
15.
The density of water is
a)
.1 g/cubic cm
b)
10g/cubic cm
c)
1.0 g/cubic cm
d)
0 g/cubic cm
16.
Bond formed when one or more electrons are transferred from one atom to another
a)
Covalent
b)
Chemical
c)
Ionic
d)
James
17.
Bond formed by the sharing of electrons between atoms
a)
Chemical
b)
Covalent
c)
Ionic
d)
James
18.
Attraction between molecules of different substances
a)
Adhesion
b)
Cohesion
c)
Polarity
19.
Attraction between molecules of the same substance
a)
Adhesion
b)
Cohesion
c)
Polarity
d)
Van der Waals forces
20.
Smallest unit of life
a)
Atom
b)
Cell
c)
Molecule
21.
Compound that forms H+ ions in solution
a)
Acid
b)
Base
c)
Buffer
22.
Compound that produces OH- (hydroxide ions) in solution
a)
Acid
b)
Base
c)
Buffer
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