Question 1

Osmium has a density of 22.6 g/cm3. What volume (in cm3) would be occupied by a 21.8 g sample of osmium?

Accepted Answer

A)  2.03 × 10- 3 
B)  1.04 
C)  493 
D)  0.965 
E)  2.03 × 103 
A)  2.03 × 10- 3 
B)  1.04 
C)  493 
D)  0.965 
E)  2.03 × 103 D

Question 2

The SI unit for mass is _.

Accepted Answer

A)  troy ounce 
B)  none of the above 
C)  gram 
D)  pound 
E)  kilogram 
A)  troy ounce 
B)  none of the above 
C)  gram 
D)  pound 
E)  kilogram E

Question 3

How many significant figures are in the measurement 5.34 g?

Accepted Answer

A)  4 
B)  2 
C)  3 
D)  1 
E)  5 
A)  4 
B)  2 
C)  3 
D)  1 
E)  5 C

Question 4

1 picometer = centimeters

Accepted Answer

A)  1 × 1010  
B)  1 × 10- 10  
C)  1 × 10- 8  
D)  1 × 10- 12  
E)  1 × 108 
A)  1 × 1010  
B)  1 × 10- 10  
C)  1 × 10- 8  
D)  1 × 10- 12  
E)  1 × 108

Question 5

1 nanometer = picometers

Accepted Answer

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

Question 6

A temperature of 400 K is the same as °F.

Accepted Answer

A)  286 
B)  261 
C)  88 
D)  127 
E)  103 
A)  286 
B)  261 
C)  88 
D)  127 
E)  103

Question 7

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

Accepted Answer

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

Question 8

There are _ ng in a pg.

Accepted Answer

A)  0.01 
B)  1000 
C)  10 
D)  0.001 
E)  100 
A)  0.01 
B)  1000 
C)  10 
D)  0.001 
E)  100

Question 9

A common English set of units for expressing velocity is miles/hour. The SI unit for velocity is ?

Accepted Answer

A)  cm/s 
B)  m/hr 
C)  km/hr 
D)  m/s 
E)  km/s 
A)  cm/s 
B)  m/hr 
C)  km/hr 
D)  m/s 
E)  km/s

Question 10

A temperature of _ K is the same as 63°F.

Accepted Answer

A)  290 
B)  336 
C)  276 
D)  17 
E)  29 
A)  290 
B)  336 
C)  276 
D)  17 
E)  29

Question 11

The number 0.00430 has significant figures.

Accepted Answer

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

Question 12

One angstrom, symbolized Å, is 10- 10 m. 1 cm3 = Å3.

Accepted Answer

A)  10- 30  
B)  10- 24  
C)  1030  
D)  10- 9  
E)  1024 
A)  10- 30  
B)  10- 24  
C)  1030  
D)  10- 9  
E)  1024

Question 13

The correct answer (reported to the proper number of significant figures) to the following is
.
(1815- 1806) × (9.11 × 7.92) = __________

Accepted Answer

The answer of The correct answer (reported to the proper...

Question 14

The SI unit of temperature is .

Accepted Answer

A)  K 
B)  t 
C)  °F 
D)  °C 
E)  T 
A)  K 
B)  t 
C)  °F 
D)  °C 
E)  T

Question 15

The unit of force in the English measurement system is  . The SI unit of force is the Newton,Which is          in base SI units.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 16

The law of constant composition applies to .

Accepted Answer

A)  homogeneous mixtures 
B)  solids 
C)  heterogeneous mixtures 
D)  solutions 
E)  compounds 
A)  homogeneous mixtures 
B)  solids 
C)  heterogeneous mixtures 
D)  solutions 
E)  compounds

Question 17

Water is considered to be a diatomic molecule because it is composed of two different atoms.

Accepted Answer

A) True 
 B)False

Question 18

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

Accepted Answer

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

Question 19

If matter is uniform throughout, cannot be separated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is called a (an) .

Accepted Answer

A)  element 
B)  compound 
C)  heterogeneous mixture 
D)  homogeneous mixture 
E)  mixture of elements 
A)  element 
B)  compound 
C)  heterogeneous mixture 
D)  homogeneous mixture 
E)  mixture of elements

Question 20

If an object is accelerating at a rate of 25 m/s2, how fast will it be moving (in m/s) after 1.50 min? (Assume an initial velocity of zero.)

Accepted Answer

A)  3.6 
B)  38 
C)  2.3 × 103  
D)  17 
E)  0.060 
A)  3.6 
B)  38 
C)  2.3 × 103  
D)  17 
E)  0.060

Exam 1: Introduction: Matter and Measurement

Osmium has a density of 22.6 g/cm3. What volume (in cm3) would be occupied by a 21.8 g sample of osmium?

The SI unit for mass is _.

How many significant figures are in the measurement 5.34 g?

1 picometer = centimeters

1 nanometer = picometers

A temperature of 400 K is the same as °F.

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

There are _ ng in a pg.

A common English set of units for expressing velocity is miles/hour. The SI unit for velocity is ?

A temperature of _ K is the same as 63°F.

The number 0.00430 has significant figures.

One angstrom, symbolized Å, is 10- 10 m. 1 cm3 = Å3.

The correct answer (reported to the proper number of significant figures) to the following is . (1815- 1806) × (9.11 × 7.92) = __________

The SI unit of temperature is .

The unit of force in the English measurement system is . The SI unit of force is the Newton,Which is in base SI units.

The law of constant composition applies to .

Water is considered to be a diatomic molecule because it is composed of two different atoms.

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

If matter is uniform throughout, cannot be separated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is called a (an) .

If an object is accelerating at a rate of 25 m/s2, how fast will it be moving (in m/s) after 1.50 min? (Assume an initial velocity of zero.)

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Gases

Intermolecular Forces, Liquids, and Solids

Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Chemistry of Coordination Compounds

The Chemistry of Life: Organic and Biological Chemistry

Filters

Osmium has a density of 22.6 g/cm³. What volume (in cm³) would be occupied by a 21.8 g sample of osmium?

The correct result of the molecular mass calculation for H₂SO₄is _ . 4 × 15.9994 + 32.066 + 2 × 1.0079

One angstrom, symbolized Å, is 10^-¹⁰m. 1 cm³= Å³.

If an object is accelerating at a rate of 25 m/s², how fast will it be moving (in m/s) after 1.50 min? (Assume an initial velocity of zero.)