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Basic Chemistry (lessons 3 And 4)
Test Description: Basics of chem
Instructions: Answer all questions to get your test result.
1) An abbreviation for an element is
A
an icon
B
a symbol
C
a fomula
D
an ion
2) An acid and a base react to produce salt and
A
indicator
B
Hydrogen ions
C
Hydroxide ions
D
water
3) The shorthand way to describe what takes place in a chemical reaction is
A
an exothermic reaction
B
a chemcial equation
C
an endothermic reaction
D
a symbol
4) The type of reaction in which substances combine is called
A
synthesis
B
single replacement
C
double replacement
D
decomposition
5) The range on the pH scale is
A
-7 to +7
B
0 to 14
C
-14 to 14
D
0 -100
6) The atomic weight is the sum of the protons and
A
atoms
B
protons
C
nuclei
D
electrons
7) The atomic number of an element is equal to the number of
A
Neutrons
B
atoms
C
Protons or electrons
D
nuclei
8) Lemon, vinegar and OJ are all examples of
A
Base
B
indicators
C
Acid
D
neutral solutions
9) Red cabbage juice is a
A
indicator
B
Acid
C
Base
D
Neutral solution
10) Carbon has an atomic number of 6 and a weight of 12. How many protons does it have
A
12
B
18
C
6
D
3
*select an answer for all questions
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