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