Question 1

Zeros located between two numbers are not significant.

Accepted Answer

A) True 
 B)False

Question 2

The correct decimal representation of 6.453 × 103 is:

Accepted Answer

A) 6,453 
B) 0.006453 
C) 6.5 × 103 
D) 6.453 
E) none of the above

Question 3

A conversion factor is a fraction with one unit on top and a different unit on the bottom.

Accepted Answer

A) True 
 B)False

Question 4

All solids have the same density.

Accepted Answer

A) True 
 B)False

Question 5

The number 0.010100 has five significant figures.

Accepted Answer

A) True 
 B)False

Question 6

A plastic block has dimensions of 2.2 cm × 3.0 cm × 1.5 cm and a mass of 12.4 grams.Will the block float in water and why?

Accepted Answer

A) Yes,because the density of the block is 1.3 g/mL which is less than the density of water. 
B) Yes,because the density of the block is 0.80 g/mL which is less than the density of water. 
C) No,because the density of the block is 1.3 g/mL which is greater than the density of water. 
D) No,because the density of the block is 0.80 g/mL which is greater than the density of water. 
E) none of the above

Question 7

How many inches are in 6.32 cm?

Accepted Answer

A) 16.1 
B) 2.49 
C) 3.78 
D) 8.86 
E) none of the above

Question 8

How many grams are in 1.48 × 107 μg?

Accepted Answer

A) 1.48 × 103 
B) 1.48 × 1013 
C) 1.48 
D) 14.8 
E) none of the above

Question 9

When the number 2.35 is rounded to contain 2 significant figures it becomes 2.4.

Accepted Answer

A) True 
 B)False

Question 10

The prefix micro represents the multiplier 0.001.

Accepted Answer

A) True 
 B)False

Question 11

The mass of an object,4.55 × 10-3 g,expressed in decimal notation is 0.000455 g.

Accepted Answer

A) True 
 B)False

Question 12

The correct multiplier for the prefix micro is:

Accepted Answer

A) 103 
B) 10-6 
C) 10-9 
D) 106 
E) none of the above

Question 13

Suppose a thermometer has marks at every one degree increment and the mercury level on the thermometer is exactly between the 25 and 26 degree Celsius marks.We should properly report the temperature measurement as

Accepted Answer

A) 25°C 
B) 26°C 
C) 25.5°C 
D) 25.50°C 
E) 25.55°C

Question 14

Given the following list of densities,which materials would float in a molten vat of lead provided that they do not themselves melt? Densities (g/mL): lead = 11.4,glass = 2.6,gold = 19.3,charcoal = 0.57,platinum = 21.4.

Accepted Answer

A) gold and platinum 
B) glass and charcoal 
C) gold,platinum,glass and coal 
D) gold and charcoal 
E) none of the above

Question 15

Determine the answer to the following equation with correct number of significant figures:
(17.103 + 2.03)× 1.02521 = ________

Accepted Answer

A) 19.6153 
B) 19.62 
C) 19.6 
D) 20 
E) none of the above

Question 16

The correct number of significant figures in the number 0.002320 is:

Accepted Answer

A) 7 
B) 4 
C) 3 
D) ambiguous 
E) none of the above

Question 17

What is the standard SI unit for length?

Accepted Answer

A) mile 
B) centimeter 
C) foot 
D) meter 
E) none of the above

Question 18

How many significant digits should be reported in the answer to the following calculation? 
=

Accepted Answer

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

Question 19

What is the volume of 12.8 g of a liquid that has a density of 0.789 g/mL?

Accepted Answer

A) 12.8 mL 
B) 16.2 mL 
C) 10.7 mL 
D) 13.6 mL 
E) none of the above

Question 20

The exponential 104 is equal to which decimal number?

Accepted Answer

A) 10,000 
B) 1 
C) 10 
D) 100 
E) none of the above

Exam 2: Measurement and Problem Solving

Zeros located between two numbers are not significant.

The correct decimal representation of 6.453 × 10³ is:

A conversion factor is a fraction with one unit on top and a different unit on the bottom.

All solids have the same density.

The number 0.010100 has five significant figures.

A plastic block has dimensions of 2.2 cm × 3.0 cm × 1.5 cm and a mass of 12.4 grams.Will the block float in water and why?

How many inches are in 6.32 cm?

How many grams are in 1.48 × 10⁷ μg?

When the number 2.35 is rounded to contain 2 significant figures it becomes 2.4.

The prefix micro represents the multiplier 0.001.

The mass of an object,4.55 × 10^-3 g,expressed in decimal notation is 0.000455 g.

The correct multiplier for the prefix micro is:

Suppose a thermometer has marks at every one degree increment and the mercury level on the thermometer is exactly between the 25 and 26 degree Celsius marks.We should properly report the temperature measurement as

Given the following list of densities,which materials would float in a molten vat of lead provided that they do not themselves melt? Densities (g/mL) : lead = 11.4,glass = 2.6,gold = 19.3,charcoal = 0.57,platinum = 21.4.

Determine the answer to the following equation with correct number of significant figures: (17.103 + 2.03) × 1.02521 = ________

The correct number of significant figures in the number 0.002320 is:

What is the standard SI unit for length?

How many significant digits should be reported in the answer to the following calculation? =

What is the volume of 12.8 g of a liquid that has a density of 0.789 g/mL?

The exponential 10⁴ is equal to which decimal number?