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Chapter 6, Review 3
Test Description: Final questions offered as a test review for this chapter
Instructions: Answer all questions to get your test result.
1) What type of macromolecule stores an organism's genetic information?
A
carbohydrate
B
protein
C
DNA
D
lipid
2) The best example of a solution is:
A
milk
B
paint
C
seawater
D
blood
3) The property that is responsible for the fact that water and oil do not mix is:
A
density
B
phase
C
mass
D
polarity
4) Two substances combine producing heat is evidence that a chemical reaction happened.
A
Yes, energy is released
B
No, this is a physical change
C
No, heat is not a chemical
D
Yes, energy is absorbed
5) Elements are pure substances made up of only one kind of:
A
element
B
atom
C
molecule
D
bond
6) What increases the rate of a reaction by lowering the activation energy?
A
sugar
B
nucleic acid
C
catalyst
D
enzyme
7) The bond due to the electrostatic attraction between adjacent water molecules is called:
A
hydrogen bond
B
ionic bond
C
covalent bond
D
polar bond
8) A neutral atom contains 18 protons, how many electrons does it contain?
A
18
B
12
C
9
D
0
9) What type of chemical reaction takes place when heat is released into the environment?
A
exothermic
B
endothermic
C
polar
D
catalytic
10) Elements in Group 1 in the periodic table of the elements have how many outer electrons?
A
8
B
1
C
4
D
0
*select an answer for all questions
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