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Biology: Chapter 2
Test Description: Part 1
Instructions: Answer all questions to get your test result.
1) Substance that is dissolved in a solution.
A
Suspension
B
Solvent
C
Solute
D
Mixture
2) Number of valence electrons "most" atoms need to be considered stable.
A
4
B
8
C
7
D
2
3) Used to store energy.
A
Lipids
B
Proteins
C
Carbohydrates
D
Nucleic acids
4) Monosaccharides contain 2 or more sugar molecules.
A
True
B
False
5) Calcium is a neutral atom. How many electrons must it have?
A
20
B
38
C
21
D
19
6) The elements produced as a result of a chemical reaction are called
A
substrates
B
products
C
reactants
D
elements
7) Water is an example of an ionic bond.
A
True
B
False
8) How many more electrons does aluminum need to be stable?
A
4
B
5
C
6
D
3
9) The pH range for acids.
A
0-14
B
0-7
C
0-6
D
8-14
10) Isotopes are elements that have the same number of protons but different numbers of electrons.
A
True
B
False
*select an answer for all questions
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