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Chemistry First Quarter Benchmark Review
Test Description: First Quarter Benchmark Review for Chemistry
Instructions: Answer all questions to get your test result.
1) Which is the comparison for the results?
A
control group
B
dependent variable
C
independent variable
D
hypothesis
2) Which is quantitative?
A
color
B
temperature
C
hardness
D
texture
3) Which does the experimenter manipulate?
A
control
B
independent
C
dependent
D
results
4) Which has 4 significant figures?
A
6.980
B
3.4210
C
0.001
D
4800
5) What s the value for deci-?
A
one
B
one-hundredth
C
ten
D
one-tenth
6) How many significant figures are in 450,004,600?
A
5
B
9
C
7
D
6
7) How many significant figures are in 0.000302700
A
3
B
9
C
10
D
6
8) Which scientist identified the positively charged nucleus?
A
Rutherford
B
Chadwick
C
Bohr
D
Thomson
9) Which has a charge of 1+?
A
electron
B
atom
C
neutron
D
proton
10) How many electrons are in an neutral atom of sodium?
A
12
B
23
C
11
D
22
11) How many neutrons are in an atom of chlorine?
A
18
B
34
C
17
D
35
12) Which element has 14 protons?
A
nitrogen
B
aluminum
C
silicon
D
carbon
13) Which term describes the amount of mass contained per unit volume?
A
density
B
length
C
mass
D
temperature
14) Which is the value associated with the prefix nano-?
A
one-thousandth
B
billion
C
one-millionth
D
one-billionth
15) Which is the correct conversion for a temperature of 54.3°C?
A
32F
B
218.7K
C
327.3K
D
100F
16) A nuclear reaction may involve:
A
neutrons
B
protons
C
all of the above
D
electrons
17) _____ is the splitting of nuclei.
A
decay
B
fission
C
bonding
D
fusion
18) Alpha particles have a _____ charge.
A
0
B
1-
C
2+
D
1+
19) Beta particles have a _____ charge.
A
1+
B
0
C
2+
D
1-
20) Gamma rays have a _____ charge.
A
1+
B
2+
C
1-
D
0
*select an answer for all questions
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