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Scientific Notation And And Significant Figures
Test Description: Chapter 1 stuff
Instructions: Answer all questions to get your test result.
1) To convert 0.0000567 to scientific notation the power of ten will be
A
1
B
5
C
-1
D
-5
2) 2.8 E11 x 1.5 E-5 =
A
4200000
B
1.9 E16
C
4.2 E16
D
42000000000000000
3) In the measurement 234.5, the estimated digit is
A
3
B
2
C
5
D
4
4) 8.8E24 -8.9E25=
A
0
B
-1E24
C
7.9E24
D
-0.1
5) Which of the following is an SI base unit?
A
Kilogram
B
Degree Celcius
C
minute
D
foot
6) Which is the largest?
A
18 m
B
18 mm
C
18 cm
D
18 km
7) Which of the following is correct about a number obtained by measuremetnt?
A
It must have a unit and at least one estimated digit.
B
It must have one and only one estimated digit.
C
All of the uncertain digits written must be recorded.
D
It must be exact.
8) Which unit do we use in chemistry for volume?
A
oz
B
gal
C
cup
D
L
9) Which of the following numbers represnts proper scientific notation as displayed by your calculator??
A
3.4E21
B
34E21
C
3400000000000000000000
D
3.4^21
10) Which is not an SI base unit
A
degree Celcius
B
Kelvin
C
second
D
meter
11) 13.023 x 123.1 =____. The result of this calculation will have how many significant figures?
A
It depends on what the unit is
B
3
C
9
D
4
12) How many significant digits are in the measurement 0.00340
A
3
B
2
C
5
D
4
13) When rounded to three significant digits, the number 0.01342 becomes
A
0.013
B
0.0134
C
134
D
0.01
14) The result of 82.0/17 is
A
5.0
B
4.8
C
4.82
D
4.823529412
15) The result of 1.233 + 2.27 is
A
3.5
B
3.503
C
3.50
D
4
16) (17.5 + 90.2) x 2.243 =
A
240.
B
241.5711
C
242
D
241.6
17) 0.125 - 0.00033 =
A
0.13
B
0.12467
C
0.125
D
0.1247
18) How many significant figures are there in the number 0.02040?
A
4
B
5
C
6
D
3
19) When converted to standard notation the number 6.75E10 is
A
6750000000
B
67500000000
C
0.0000000000675
D
0.0000000675
20) Which number has 3 significant figures?
A
0.025
B
700
C
30.2
D
110
*select an answer for all questions
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