Question 1

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

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  none of the aboveF) C) and D)
G) A) and B)

Question 2

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

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  none of the aboveF) All of the above
G) D) and E)

Question 3

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

Accepted Answer

A)  10 cm2
B)  10.0 cm2
C)  11 cm2
D)  11.0 cm2
E)  11.1 cm2F) C) and D)
G) A) and B)

Question 4

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

Accepted Answer

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

Question 5

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

Accepted Answer

A)  accuracy
B)  error
C)  precision
D)  uncertainty
E)  none of the aboveF) B) and E)
G) A) and E)

Question 6

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

Accepted Answer

A)  4.0 cm2
B)  4.00 cm2
C)  4.38 cm2
D)  4.384 cm2
E)  4.40 cm2F) B) and C)
G) A) and D)

Question 7

Round off the following measurement to three significant digits: 99.95 mL.

Accepted Answer

A)  99.5 mL
B)  99.9 mL
C)  100 mL
D)  101 mL
E)  1.00 x 102 mLF) A) and B)
G) None of the above

Question 8

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

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  none of the aboveF) A) and B)
G) A) and C)

Question 9

Which of the following is the best estimate for the diameter of a 5¢ coin?

Accepted Answer

A)  1 cm
B)  2 cm
C)  5 cm
D)  10 cm
E)  20 cmF) A) and B)
G) C) and D)

Question 10

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

Accepted Answer

A)  inexact digits
B)  nonsignificant digits
C)  significant digits
D)  uncertain digits
E)  none of the aboveF) A) and B)
G) A) and C)

Question 11

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

Accepted Answer

A)  calculator notation
B)  exponential notation
C)  power of 10
D)  scientific notation
E)  none of the aboveF) C) and E)
G) B) and E)

Question 12

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

Accepted Answer

A)  length
B)  mass
C)  volume
D)  weight
E)  none of the aboveF) B) and E)
G) C) and D)

Question 13

Which of the following metric rulers has the least uncertainty?

Accepted Answer

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.F) B) and D)
G) B) and E)

Question 14

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

Accepted Answer

A)  41.9 cm3
B)  41.99 cm3
C)  42 cm3
D)  42.0 cm3
E)  42.00 cm3F) A) and B)
G) A) and C)

Question 15

Multiply 6.4 x 10-3 times 8.0 x 107 and express the answer in scientific notation.

Accepted Answer

A)  5.1 x 10-21
B)  5.1 x 10-3
C)  5.1 x 103
D)  5.1 x 104
E)  5.1 x 105F) C) and E)
G) None of the above

Question 16

Express 0.000 000 000 000 001 as an exponential number.

Accepted Answer

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

Question 17

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

Accepted Answer

A)  307 cm
B)  307.0 cm
C)  307.4 cm
D)  307.5 cm
E)  308 cmF) All of the above
G) C) and D)

Question 18

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

Accepted Answer

A)  elimination
B)  exclusion
C)  rounding off
D)  simplification
E)  none of the aboveF) D) and E)
G) A) and B)

Question 19

Which of the following instruments provides an exact measurement?

Accepted Answer

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

Question 20

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

Accepted Answer

A)  centimeter
B)  gram
C)  milliliter
D)  second
E)  none of the aboveF) A) and D)
G) A) and C)

Exam 21: Interlude: Prerequisite Science Skills

Which of the following is the best estimate for the diameter of a 5¢ coin?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Round off the following measurement to three significant digits: 99.95 mL.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following instruments provides an exact measurement?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Express 0.000 000 000 000 001 as an exponential number.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Multiply 6.4 x 10-3 times 8.0 x 107 and express the answer in scientific notation.

Correct AnswerverifiedShow Answer

Which of the following metric rulers has the least uncertainty?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified