Deck 21: Interlude: Prerequisite Science Skills

Question 1

How many significant digits are in the length measurement 10.01 cm?

A)1
B)2
C)3
D)4
E)none of the above

Answer 1

4

Question 2

Which of the following quantities can be measured exactly?

A)length
B)mass
C)volume
D)time
E)none of the above

Answer 2

none of the above

Question 3

What is the term for the amount of substance measured by a laboratory balance?

A)length
B)mass
C)volume
D)weight
E)none of the above

Answer 3

mass

Question 4

What is the term for ten followed by a positive or negative exponent?

A)calculator notation
B)exponential notation
C)power of 10
D)scientific notation
E)none of the above

Question 5

Which of the following instruments has the least uncertainty?

A)graduated cylinder,± 0.5 mL
B)pipet,± 0.1 mL
C)buret,± 0.01 mL
D)syringe,± 0.001 mL
E)All instruments have the same uncertainty.

Question 6

What is the term for a numerical value and unit that expresses a mass,length,or volume?

A)assessment
B)estimation
C)measurement
D)quantity
E)none of the above

Question 7

What is the general term for any device that records a measurement?

A)appliance
B)calculator
C)instrument
D)tool
E)none of the above

Question 8

Which of the following balances has the least uncertainty?

A)analytical balance,± 0.0001 g
B)electronic balance,± 0.001 g
C)beam balance,± 0.01 g
D)platform balance,± 0.1 g
E)All balances have the same uncertainty.

Question 9

Which of the following terms is a metric unit of volume?

A)centimeter
B)gram
C)milliliter
D)second
E)none of the above

Question 10

What is the term for the digits in a measurement that exceed the certainty of the instrument?

A)inexact digits
B)nonsignificant digits
C)significant digits
D)uncertain digits
E)none of the above

Question 11

Which of the following metric rulers has the least uncertainty?

A)Ruler A,± 1 cm
B)Ruler B,± 0.1 cm
C)Ruler C,± 0.5 cm
D)Ruler D,± 0.05 cm
E)All rulers have the same uncertainty.

Question 12

What is the term for eliminating digits that are not significant?

A)elimination
B)exclusion
C)rounding off
D)simplification
E)none of the above

Question 13

What is the term for the inexactness of an instrumental measurement?

A)accuracy
B)error
C)precision
D)uncertainty
E)none of the above

Question 14

Which of the following terms is a metric unit of length?

A)centimeter
B)gram
C)milliliter
D)second
E)none of the above

Question 15

Which of the following instruments provides an exact measurement?

A)millimeter ruler
B)milligram balance
C)milliliter pipet
D)all of the above
E)none of the above

Question 16

What is the term for the certain digits in a measurement plus one estimated digit?

A)certain digits
B)instrumental digits
C)nonsignificant digits
D)significant digits
E)none of the above

Question 17

What is the term for a method of expressing a value by placing a decimal after the first significant digit and indicating the magnitude using a power of 10?

A)calculator notation
B)engineering notation
C)fixed decimal notation
D)scientific notation
E)none of the above

Question 18

Which of the following instruments provides an exact measurement?

A)metric ruler
B)metric balance
C)metric pipet
D)all of the above
E)none of the above

Question 19

What is the term for a number that indicates a value is multiplied by itself one or more times?

A)exponent
B)power of 10
C)reciprocal
D)scientific notation
E)none of the above

Question 20

Which of the following terms is a metric unit of mass?

A)centimeter
B)gram
C)milliliter
D)second
E)none of the above

Question 21

How many significant digits are in the volume measurement 0.250 mL?

A)1
B)2
C)3
D)4
E)none of the above

Question 22

How many significant digits are in the length measurement 61,000 cm?

A)2
B)3
C)4
D)5
E)none of the above

Question 23

Round off the following measurement to three significant digits: 19.945 g.

A)19.0 g
B)19.9 g
C)19.950 g
D)19.945 g
E)20.0 g

Question 24

How many significant digits are in the time measurement 60.010 s?

A)1
B)2
C)3
D)4
E)none of the above

Question 25

How many significant digits are in the mass measurement 1.050 g?

A)1
B)2
C)3
D)4
E)none of the above

Question 26

How many significant digits are in the mass measurement 0.050 g?

A)1
B)2
C)3
D)4
E)none of the above

Question 27

How many significant digits are in the mass measurement 30.406 g?

A)1
B)2
C)3
D)4
E)none of the above

Question 28

Round off the following measurement to three significant digits: 35.35 mL.

A)35.0 mL
B)35.3 mL
C)35.30 mL
D)35.4 mL
E)35.40 mL

Question 29

How many significant digits are in the volume measurement 4040.0 mL?

A)2
B)3
C)4
D)5
E)none of the above

Question 30

How many significant digits are in the time measurement 0.0036 s?

A)1
B)2
C)3
D)4
E)none of the above

Question 31

Round off the following measurement to three significant digits: 3261 mL.

A)320 mL
B)326 mL
C)327 mL
D)3260 mL
E)3270 mL

Question 32

How many significant digits are in the volume measurement 50,000 mL?

A)1
B)2
C)3
D)4
E)none of the above

Question 33

How many significant digits are in the length measurement 100.60 cm?

A)1
B)2
C)3
D)4
E)none of the above

Question 34

How many significant digits are in the time measurement 20,000 s?

A)1
B)2
C)3
D)4
E)none of the above

Question 35

Round off the following measurement to three significant digits: 307.45 cm.

A)307 cm
B)307.0 cm
C)307.4 cm
D)307.5 cm
E)308 cm

Question 36

Round off the following measurement to three significant digits: 2252 cm.

A)225 cm
B)226 cm
C)230 cm
D)2250 cm
E)2260 cm

Question 37

How many significant digits are in the volume measurement 0.010 mL?

A)1
B)2
C)3
D)4
E)none of the above

Question 38

How many significant digits are in the mass measurement 20,000 g?

A)1
B)2
C)3
D)4
E)none of the above

Question 39

Round off the following measurement to three significant digits: 1255 g.

A)125 g
B)126 g
C)130 g
D)1250 g
E)1260 g

Question 40

How many significant digits are in the length measurement 0.0100 cm?

A)1
B)2
C)3
D)4
E)none of the above

Question 41

Subtract 10.0 mL from 45.65 mL and round off the answer.

A)35 mL
B)35.6 mL
C)35.65 mL
D)35.7 mL
E)36 mL

Question 42

Multiply 2.505 cm by 1.75 cm by 1.0 cm and round off the answer.

A)4 cm3
B)4.4 cm3
C)4.38 cm3
D)4.384 cm3
E)4.0 cm3

Question 43

Express 0.000 000 000 000 01 as an exponential number.

A)1 x 10-15
B)1 x 10-14
C)1 x 10-1
D)1 x 1014
E)none of the above

Question 44

Multiply 5.55 cm times 2 cm and round off the answer.

A)10 cm2
B)10.0 cm2
C)11 cm2
D)11.0 cm2
E)11.1 cm2

Question 45

Divide 28.82 g by 14.5 mL and round off the answer.

A)1.97 g/mL
B)1.98 g/mL
C)1.99 g/mL
D)1.987 g/mL
E)1.988 g/mL

Question 46

Add 25.5 cm to 0.50 cm and round off the answer.

A)26 cm
B)26.0 cm
C)26.05 cm
D)26.1 cm
E)27 cm

Question 47

Subtract 0.25 cm from 11.5 cm and round off the answer.

A)11 cm
B)11.0 cm
C)11.2 cm
D)11.25 cm
E)11.3 cm

Question 48

Multiply 1.50 cm by 1.05 cm by 1.00 cm and round off the answer.

A)1.575 cm3
B)1.58 cm3
C)1.6 cm3
D)1.60 cm3
E)2 cm3

Question 49

Subtract 0.25 g from 31.116 g and round off the answer.

A)30.8 g
B)30.87 g
C)30.866 g
D)30.9 g
E)31 g

Question 50

Express 0.000 000 000 000 1 as an exponential number.

A)1 x 10-13
B)1 x 10-12
C)1 x 10-1
D)1 x 1013
E)none of the above

Question 51

Multiply 2.505 cm times 1.75 cm and round off the answer.

A)4.0 cm2
B)4.00 cm2
C)4.38 cm2
D)4.384 cm2
E)4.40 cm2

Question 52

Express 1,000,000,000,000,000,000,000,000,000 as an exponential number.

A)1 x 10-27
B)1 x 10-26
C)1 x 1027
D)1 x 1028
E)none of the above

Question 53

Add 250.0 mL to 5.00 mL and round off the answer.

A)250 mL
B)255 mL
C)255.0 mL
D)255.00 mL
E)256 mL

Question 54

Express 10,000,000,000,000,000,000,000 as an exponential number.

A)1 x 10-22
B)1 x 10-21
C)1 x 1021
D)1 x 1022
E)none of the above

Question 55

Multiply 7.2 cm by 3.75 cm by 1.555 cm and round off the answer.

A)41.9 cm3
B)41.99 cm3
C)42 cm3
D)42.0 cm3
E)42.00 cm3

Question 56

Express 100,000,000,000,000,000,000 as an exponential number.

A)1 x 10-20
B)1 x 10-18
C)1 x 1018
D)1 x 1020
E)none of the above

Question 57

Divide 11.375 g by 10.0 mL and round off the answer.

A)1.1 g/mL
B)1.13 g/mL
C)1.1375 g/mL
D)1.138 g/mL
E)1.14 g/mL

Question 58

Multiply 1.05 cm times 2.2 cm and round off the answer.

A)2 cm2
B)2.0 cm2
C)2.3 cm2
D)2.31 cm2
E)3 cm2

Question 59

Add 7.77 g to 11.666 g and round off the answer.

A)19.0 g
B)19.4 g
C)19.43 g
D)19.44 g
E)19.436 g

Question 60

Divide 124.7 g by 25 cm3 and round off the answer.

A)4.9 g/cm3
B)5.0 g/cm3
C)4.98 g/cm3
D)4.988 g/cm3
E)5 g/cm3

Question 61

One gram of silver contains 5,580,000,000,000,000,000,000 atoms.Express the number of silver atoms in scientific notation.

A)5.58 x 1020
B)5.58 x 1021
C)5.58 x 1022
D)55.8 x 1020
E)55.8 x 1021

Question 62

One liter of argon gas contains 26,900,000,000,000,000,000,000 atoms at normal temperature and pressure.Express the number of atoms in scientific notation.

A)2.69 x 1020
B)2.69 x 1021
C)2.69 x 1022
D)26.9 x 1021
E)26.9 x 1022

Question 63

A lithium atom has a radius of 0.000 000 015 2 cm.Express the atomic radius in scientific notation.

A)1.52 x 10-9 cm
B)1.52 x 10-8 cm
C)1.52 x 10-7 cm
D)1.52 x 107 cm
E)1.52 x 108 cm

Question 64

A sodium atom has a radius of 0.000 000 018 6 cm.Express the atomic radius in scientific notation.

A)1.86 x 10-9 cm
B)1.86 x 10-8 cm
C)1.86 x 10-7 cm
D)1.86 x 107 cm
E)1.86 x 108 cm

Question 65

A potassium atom has a radius of 0.000 000 022 7 cm.Express the atomic radius in scientific notation.

A)2.27 x 10-9 cm
B)2.27 x 10-8 cm
C)2.27 x 10-7 cm
D)2.27 x 107 cm
E)2.27 x 108 cm

Question 66

An iron atom has a mass of 0.000 000 000 000 000 000 000 0928 g.Express the mass in scientific notation.

A)9.28 x 1023 g
B)9.28 x 1022 g
C)9.28 x 10-22 g
D)9.28 x 10-23 g
E)9.28 x 10-24 g

Question 67

A mercury atom has a mass of 0.000 000 000 000 000 000 000 333 g.Express the mass in scientific notation.

A)3.33 x 1022 g
B)3.33 x 1021 g
C)3.33 x 10-21 g
D)3.33 x 10-22 g
E)3.33 x 10-23 g

Question 68

Ten milliliters of neon gas contains 269,000,000,000,000,000,000 atoms at normal temperature and pressure.Express the number of atoms in scientific notation.

A)2.69 x 1018
B)2.69 x 1019
C)2.69 x 1020
D)269 x 1018
E)269 x 1019

Question 69

Express 0.000 000 000 000 001 as an exponential number.

A)1 x 10-16
B)1 x 10-15
C)1 x 10-1
D)1 x 1015
E)none of the above

Question 70

Express the exponential number 6.26 x 103 as an ordinary number.

A)0.006 26
B)0.000 626
C)6,260
D)62,600
E)none of the above

Question 71

Express the exponential number 2.25 x 10-4 as an ordinary number.

A)0.000 225
B)0.000 022 5
C)22,500
D)225,000
E)none of the above

Question 72

One gram of gold contains 3,060,000,000,000,000,000,000 atoms.Express the number of gold atoms in scientific notation.

A)3.06 x 1020
B)3.06 x 1021
C)3.06 x 1022
D)30.6 x 1020
E)30.6 x 1021

Question 73

A carbon atom has a radius of 7.7 x 10-9 cm.Express the atomic radius as an ordinary number.

A)0.000 000 000 077 cm
B)0.000 000 000 77 cm
C)0.000 000 007 7 cm
D)0.000 000 077 cm
E)0.000 000 77 cm

Question 74

Express the exponential number 1.51 x 10-5 as an ordinary number.

A)0.000 151
B)0.000 015 1
C)15,100
D)151,000
E)none of the above

Question 75

An aluminum atom has a mass of 0.000 000 000 000 000 000 000 0448 g.Express the mass in scientific notation.

A)4.48 x 1023 g
B)4.48 x 1022 g
C)4.48 x 10-22 g
D)4.48 x 10-23 g
E)4.48 x 10-24 g

Question 76

One gram of carbon contains 50,200,000,000,000,000,000,000 atoms.Express the number of carbon atoms in scientific notation.

A)5.02 x 1021
B)5.02 x 1022
C)5.02 x 1023
D)50.2 x 1021
E)50.2 x 1022

Question 77

Express the exponential number 5.15 x 105 as an ordinary number.

A)0.000 515
B)0.000 051 5
C)51,500
D)515,000
E)none of the above

Question 78

Express the exponential number 1.11 x 104 as an ordinary number.

A)0.000 111
B)0.000 011 1
C)11,100
D)111,000
E)none of the above

Question 79

Express the exponential number 5.55 x 10-3 as an ordinary number.

A)0.005 55
B)0.000 555
C)5,550
D)55,500
E)none of the above

Question 80

One milliliter of helium gas contains 26,900,000,000,000,000,000 atoms at normal temperature and pressure.Express the number of atoms in scientific notation.

A)2.69 x 1017
B)2.69 x 1018
C)2.69 x 1019
D)26.9 x 1018
E)26.9 x 1019