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Properties Of Water
Test Description: Properties of water (2.2)
Instructions: Answer all questions to get your test result.
1) In a water molecule, shared electrons spend more time around the oxygen atom than the hydrogen atoms. As a result, the oxygen atom is
A
slightly positive
B
slightly negative
C
very negative
D
very positive
2) When sugar is dissolved in water, water is the ____.
A
solvent
B
solute
C
buffer
D
suspension
3) While preparing a cell culture, a scientist places a colony of bacteria into distilled water and stirs it. This mixture of water and living cells would best be called ____.
A
a solution
B
a buffer
C
a suspension
D
an isotope
4) Adhesion is responsible for the attraction between water molecules and the glass sides of a graduated cylinder.
A
false
B
true
5) A water molecule is polar because there is an uneven distribution of ___ between the oxygen and the hydrogen atoms.
A
isotopes
B
protons
C
neutrons
D
electrons
6) A compound that produces hydrogen ions in a solution is a(n) ____.
A
polymer
B
acid
C
salt
D
base
7) ____ are weak acids or bases that can react with stronger acids or bases to prevent a spike in pH.
A
buffers
B
isotopes
C
ions
D
suspensions
8) Which of the following values would be considered the most acidic according to the pH scale?
A
3
B
14
C
7
D
1
9) Which of the following values would be considered the most basic according to the pH scale?
A
7
B
15
C
12
D
1
10) _____ is the property of water that allows it to form water droplets on a smooth surface.
A
adhesion
B
capillary action
C
cohesion
D
surface tension
*select an answer for all questions
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