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Chapter 2/3 Part 2
Test Description: Environmental Science Biochemistry Chapter
Instructions: Answer all questions to get your test result.
1) Why do atoms form bonds?
A
To prevent from decaying.
B
To gain electrons and mass.
C
To get rid of their electrons and become lighter.
D
To fill their outer energy level and become stable.
2) A bond in which atoms share electrons
A
ionic bond
B
hydrogen bond
C
covalent bond
D
partial bond
3) A bond in which the partial charges on molecules attract
A
hydrogen bond
B
ionic bond
C
covalent bond
D
partial bond
4) A bond in which one atom steals an electron from another creating oppositely charged ions which attract
A
covalent bond
B
ionic bond
C
hydrogen bond
D
partial bond
5) A bond in which atoms share electrons unevenly
A
hydrogen bond
B
non-polar covalent bond
C
covalent bond
D
polar covalent bond
6) A _________ is a uniform mixture.
A
solution
B
solute
C
solvent
D
mixture
7) The _______ is the part of a solution doing the dissolving.
A
neutron
B
solute
C
solvent
D
proton
8) The _______ is the part of a solution being dissolved.
A
neutron
B
solute
C
solvent
D
proton
9) Why are aqueous solutions important to living things?
A
All chemical reactions occur in aqueous solutions in living things.
B
They release water for the organism to use for chemical reactions.
C
They help keep the organism hydrated so it can do chemical reactions.
D
All chemical reactions stop in living things put in aqueous solutions.
10) A _________ is a solution in which no more solute can be added.
A
Aqueous solution
B
Alkaline solution
C
Saturated solution
D
Heterogeneous solution
*select an answer for all questions
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