Question 1

The temperature of -25 °C is __________ in Kelvins.

Accepted Answer

A) 138 
B) 166 
C) 103 
D) 298 
E) 248

Question 2

Precision refers to __________.

Accepted Answer

A) how close a measured number is to other measured numbers 
B) how close a measured number is to the true value 
C) how close a measured number is to the calculated value 
D) how close a measured number is to zero 
E) how close a measured number is to infinity

Question 3

Which states of matter are significantly compressible?

Accepted Answer

A) gases only 
B) liquids only 
C) solids only 
D) liquids and gases 
E) solids and liquids

Question 4

One edge of a cube is measured and found to be 13 cm. The volume of the cube in m3 is __________.

Accepted Answer

A) 2.2 × 10-3 
B) 2.2 × 10-6 
C) 2.2 
D) 2.2 × 103 
E) 2.2 × 106

Question 5

A 4.369 g sample of metal is placed in a flask. Water is added to the flask and the total volume in the flask is read to be 126.4 ml. The mass of the water, flask, and metal is 268.5 g. If the mass of the flask is 139.3 g and the density of water is 1.000 g/ml, the density of the solid is __________ g/cm3.

Accepted Answer

A) 0.366 
B) 1.56 
C) 0.641 
D) 2.73 
E) 3.21

Question 6

How many liters of wine can be held in a wine barrel whose capacity is 26.0 gal? 1 gal = 4 qt = 3,7854 L.

Accepted Answer

A) 1.46 × 10-4 
B) 0.146 
C) 98.4 
D) 6.87 × 103 
E) 6.87

Question 7

Round the number 0.08535 to two significant figures.

Accepted Answer

A) 0.09 
B) 0.086 
C) 0.0854 
D) 0.085 
E) 0.08535

Question 8

A small amount of salt dissolved in water is an example of a __________.

Accepted Answer

A) homogeneous mixture 
B) heterogeneous mixture 
C) compound 
D) pure substance 
E) solid

Question 9

Of the following, __________ is the smallest mass.

Accepted Answer

A) 25 kg 
B) 2.5 × 10-2 mg 
C) 2.5 × 1015 pg 
D) 2.5 × 109 fg 
E) 2.5 × 1010 ng

Question 10

The quantity 1.0 mg/cm2 is the same as 1.0 × __________ kg/m2.

Accepted Answer

A) 10-4 
B) 104 
C) 10-6 
D) 10-2

Question 11

An iron mine produces 1.67 x 104 tons of raw ore per day. If the ore is 26.39% elemental iron, the mine produces __________ pounds of elemental iron per year. (Assume the mine operates 365 days per year.)

Accepted Answer

A) 1.221 x 1010 
B) 8.814 x 106 
C) 3.217 x 109 
D) 1.611 x 106 
E) 3.66 x 1011

Question 12

1 milligram = __________ micrograms

Accepted Answer

The answer of 1 milligram = __________ micrograms...

Question 13

A cube of an unknown metal measures 1.61 mm on one side. The mass of the cube is 36 mg. Which of the following is most likely the unknown metal?

Accepted Answer

A) copper 
B) rhodium 
C) niobium 
D) vanadium 
E) zirconium

Question 14

The correct result of the molecular mass calculation for H2SO4 is ________. 4 × 15.9994 + 32.066 + 2 × 1.0079 =

Accepted Answer

A) 98.08 
B) 98.079 
C) 98.074 
D) 98.838 
E) 98.84

Question 15

1 nanometer = __________ picometers

Accepted Answer

A) 1000 
B) 0.1 
C) 0.01 
D) 1 
E) 10

Question 16

The number 1.00430 has __________ significant figures.

Accepted Answer

A) 2 
B) 3 
C) 5 
D) 6 
E) 4

Question 17

Gases and liquids share the property of __________.

Accepted Answer

A) compressibility 
B) definite volume 
C) incompressibility 
D) indefinite shape 
E) definite shape

Question 18

A certain liquid has a density of 2.67 g/cm3. 30.5 mL of this liquid would have a mass of __________ Kg.

Accepted Answer

A) 81.4 
B) 11.4 
C) 0.0875 
D) 0.0814 
E) 0.0114

Question 19

Which one of the following has the element name and symbol correctly matched?

Accepted Answer

A) S, sodium 
B) Tn, tin 
C) Fe, iron 
D) N, neon 
E) B, bromine

Question 20

Which one of the following is the highest temperature?

Accepted Answer

A) 38 °C 
B) 96 °F 
C) 302 K 
D) none of the above 
E) the freezing point of water

Exam 1: Introduction: Matter and Measurement