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