Question 1

Which of the following cannot be separated into simpler substances by chemical means?

Accepted Answer

A)  Element 
B)  Emulsion 
C)  Compound 
D)  Homogeneous mixture 
E)  Heterogeneous mixture 
A)  Element 
B)  Emulsion 
C)  Compound 
D)  Homogeneous mixture 
E)  Heterogeneous mixture

Question 2

Explain the difference between an extensive property and an intensive property.

Accepted Answer

An extensive property depends

Question 3

The result of (3.8621 × 1.5630) - 5.98 is properly written as

Accepted Answer

A)  0.06. 
B)  0.056. 
C)  0.0565. 
D)  0.05646. 
E)  0.056462. 
A)  0.06. 
B)  0.056. 
C)  0.0565. 
D)  0.05646. 
E)  0.056462.

Question 4

Briefly explain the relationship between hypothesis and experiment in the scientific method.

Accepted Answer

A hypothesis should be capable

Question 5

________ tells how close a measurement is to the true value.

Accepted Answer

The answer of ________ tells how close a measurement is...

Question 6

The SI prefixes milli- and mega- represent, respectively:

Accepted Answer

A)  106 and 10-6 
B)  10-3 and 106 
C)  103 and 10-6  
D)  10-3 and 109 
E)  10-6 and 10-3 
A)  106 and 10-6 
B)  10-3 and 106 
C)  103 and 10-6  
D)  10-3 and 109 
E)  10-6 and 10-3

Question 7

What is the term used for findings that are summarized based on a pattern or trend?

Accepted Answer

A)  Law 
B)  Hypothesis 
C)  Theory 
D)  Phenomena 
E)  Prediction 
A)  Law 
B)  Hypothesis 
C)  Theory 
D)  Phenomena 
E)  Prediction

Question 8

Explain the rule for significant figures for multiplication and division.

Accepted Answer

The number of significant figu

Question 9

The dark meat of a 20-pound turkey requires an internal temperature of 180°F to be fully cooked. What minimum temperature reading should be displayed on a food thermometer that only measures in degrees Celsius?

Accepted Answer

A)  82°C 
B)  354°C 
C)  261°C 
D)  -192°C 
E)  -310°C 
A)  82°C 
B)  354°C 
C)  261°C 
D)  -192°C 
E)  -310°C

Question 10

Which of these quantities represents the largest mass?

Accepted Answer

A)  2.0 × 102 mg 
B)  0.0010 kg 
C)  1.0 × 105 μg 
D)  2.0 × 102 cg 
E)  10.0 dg 
A)  2.0 × 102 mg 
B)  0.0010 kg 
C)  1.0 × 105 μg 
D)  2.0 × 102 cg 
E)  10.0 dg

Question 11

Burning wood in a fireplace is a ________ change.

Accepted Answer

The answer of Burning wood in a fireplace is a...

Question 12

Explain the difference between a hypothesis and a theory.

Accepted Answer

A hypothesis is a tentative ex

Question 13

How many micrograms are in 65.3 kg?

Accepted Answer

A)  0.653 μg 
B)  6.53 × 107 μg 
C)  6.53 × 104 μg 
D)  6.53 × 10-8 μg 
E)  6.53 × 1010 μg 
A)  0.653 μg 
B)  6.53 × 107 μg 
C)  6.53 × 104 μg 
D)  6.53 × 10-8 μg 
E)  6.53 × 1010 μg

Question 14

An average Mastiff puppy weighs 2.72 kilograms. How many pounds does an average Mastiff puppy weigh? (1 lb = 453.6 g)

Accepted Answer

A)  1.24 lb 
B)  10.0 lb 
C)  59.8 lb 
D)  6.00 lb 
E)  72.0 lb 
A)  1.24 lb 
B)  10.0 lb 
C)  59.8 lb 
D)  6.00 lb 
E)  72.0 lb

Question 15

The speed needed to escape the pull of Earth's gravity is 11.3 km/s. What is this speed in mi/h? (1 mile = 1609 m)

Accepted Answer

A)  65,500 mi/h 
B)  25,300 mi/h 
C)  18,200 mi/h 
D)  1,090 mi/h 
E)  5.02 × 10-3 mi/h 
A)  65,500 mi/h 
B)  25,300 mi/h 
C)  18,200 mi/h 
D)  1,090 mi/h 
E)  5.02 × 10-3 mi/h

Question 16

How many mm3 are in 16.7 cm3?

Accepted Answer

A)  1.67 × 10-5 mm3 
B)  1.67 × 10-8 mm3 
C)  1.67 × 107 mm3  
D)  1.67 × 104 mm3 
E)  1.67 × 10-4 mm3 
A)  1.67 × 10-5 mm3 
B)  1.67 × 10-8 mm3 
C)  1.67 × 107 mm3  
D)  1.67 × 104 mm3 
E)  1.67 × 10-4 mm3

Question 17

Which of the following is not a state of matter?

Accepted Answer

A)  gas 
B)  solid 
C)  mixture 
D)  liquid 
A)  gas 
B)  solid 
C)  mixture 
D)  liquid

Question 18

Discuss the benefits of using the metric system for measurements.

Accepted Answer

All measurements in the metric system ar

Question 19

Talc is a mineral with low conductivity for heat and electricity which is not attacked by acid. It is used in talcum powder and face powder. Suppose a sample of talc weighs 13.65 g with a density of 1.75 g/cm3 in mineral oil. If this same sample of talc in air weighs 35.97 g, assuming no volume change, what is the density of the talc sample in air?

Accepted Answer

A)  4.61 g/cm3 
B)  2.82 g/cm3 
C)  2.63 g/cm3 
D)  2.44 g/cm3 
E)  1.61 g/cm3 
A)  4.61 g/cm3 
B)  2.82 g/cm3 
C)  2.63 g/cm3 
D)  2.44 g/cm3 
E)  1.61 g/cm3

Question 20

Which choice correctly expresses 15,390,000 rounded to two significant figures?

Accepted Answer

A)  15 
B)  1.5 × 10-7 
C)  1.5 × 108  
D)  15,400,000 
E)  15,000,000 
A)  15 
B)  1.5 × 10-7 
C)  1.5 × 108  
D)  15,400,000 
E)  15,000,000

Exam 1: Chemistry: the Central Science

Which of the following cannot be separated into simpler substances by chemical means?

Explain the difference between an extensive property and an intensive property.

The result of (3.8621 × 1.5630) - 5.98 is properly written as

Briefly explain the relationship between hypothesis and experiment in the scientific method.

________ tells how close a measurement is to the true value.

The SI prefixes milli- and mega- represent, respectively:

What is the term used for findings that are summarized based on a pattern or trend?

Explain the rule for significant figures for multiplication and division.

The dark meat of a 20-pound turkey requires an internal temperature of 180°F to be fully cooked. What minimum temperature reading should be displayed on a food thermometer that only measures in degrees Celsius?

Which of these quantities represents the largest mass?

Burning wood in a fireplace is a ________ change.

Explain the difference between a hypothesis and a theory.

How many micrograms are in 65.3 kg?

An average Mastiff puppy weighs 2.72 kilograms. How many pounds does an average Mastiff puppy weigh? (1 lb = 453.6 g)

The speed needed to escape the pull of Earth's gravity is 11.3 km/s. What is this speed in mi/h? (1 mile = 1609 m)

How many mm3 are in 16.7 cm3?

Which of the following is not a state of matter?

Discuss the benefits of using the metric system for measurements.

Which choice correctly expresses 15,390,000 rounded to two significant figures?

Atoms, Molecules, and Ions

Stoichiometry: Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy, Free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

How many mm³ are in 16.7 cm³?