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