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