Question 1

Ampere is a measure of

Accepted Answer

A) luminous intensity. 
B) amount. 
C) mass. 
D) length. 
E) current. 
A) luminous intensity. 
B) amount. 
C) mass. 
D) length. 
E) current.

Question 2

How many mL are in 2.54 L?

Accepted Answer

A) 2.54 × 10-3 mL 
B) 2.54 × 101 mL 
C) 2.54 × 103 mL 
D) 2.54 × 10-1 mL 
E) 2.54 × 102 mL 
A) 2.54 × 10-3 mL 
B) 2.54 × 101 mL 
C) 2.54 × 103 mL 
D) 2.54 × 10-1 mL 
E) 2.54 × 102 mL

Question 3

Which of the following volumes is equal to 40 mL?

Accepted Answer

A) 40 cm3 
B) 40 dm3 
C) 0.40 L 
D) 0.00040 kL 
A) 40 cm3 
B) 40 dm3 
C) 0.40 L 
D) 0.00040 kL

Question 4

Which of the following is an example of a chemical change?

Accepted Answer

A) Copper building materials develop a green patina over time. 
B) A match burns. 
C) Ethanol evaporates. 
D) Both A and B are examples of chemical change. 
E) All of the above are examples of chemical change. 
A) Copper building materials develop a green patina over time. 
B) A match burns. 
C) Ethanol evaporates. 
D) Both A and B are examples of chemical change. 
E) All of the above are examples of chemical change.

Question 5

Choose the heterogeneous mixture from the list below.

Accepted Answer

A) sports drink 
B) chlorine gas 
C) black coffee 
D) chicken noodle soup 
E) carbon (graphite) 
A) sports drink 
B) chlorine gas 
C) black coffee 
D) chicken noodle soup 
E) carbon (graphite)

Question 6

What is the correct answer, with the proper number of significant figures, for the following calculation?
11.5 × 8.78

Accepted Answer

The answer of What is the correct answer, with the...

Question 7

A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.71 g mL-1, 1.73 g mL-1, 1.67 g mL-1, 1.69 g mL-1. If the actual value for the density of the sugar solution is 1.40 g mL-1, which statement below best describes her results?

Accepted Answer

A) Her results are precise, but not accurate. 
B) Her results are accurate, but not precise. 
C) Her results are both precise and accurate 
D) Her results are neither precise nor accurate. 
E) It isn't possible to determine from the information given. 
A) Her results are precise, but not accurate. 
B) Her results are accurate, but not precise. 
C) Her results are both precise and accurate 
D) Her results are neither precise nor accurate. 
E) It isn't possible to determine from the information given.

Question 8

Metre is a measure of

Accepted Answer

A) mass. 
B) time. 
C) temperature. 
D) length. 
E) volume. 
A) mass. 
B) time. 
C) temperature. 
D) length. 
E) volume.

Question 9

Describe the difference between an intensive and extensive property using examples.

Accepted Answer

An intensive property does NOT depend on

Question 10

Read the length of the metal bar with the correct number of significant figures.

Accepted Answer

A) 20 cm 
B) 15 cm 
C) 15.0 cm 
D) 15.00 cm 
E) 15.000 cm 
A) 20 cm 
B) 15 cm 
C) 15.0 cm 
D) 15.00 cm 
E) 15.000 cm

Question 11

How many mm are in 3.20 cm?

Accepted Answer

A) 3.20 × 10 1 mm 
B) 3.20 × 10 -1 mm 
C) 3.20 × 10 -2 mm 
D) 3.20 × 10 2 mm 
E) 3.20 × 10 3 mm 
A) 3.20 × 10 1 mm 
B) 3.20 × 10 -1 mm 
C) 3.20 × 10 -2 mm 
D) 3.20 × 10 2 mm 
E) 3.20 × 10 3 mm

Question 12

How many significant figures are in the measurement 20.300 m?

Accepted Answer

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

Question 13

How many of the following numbers contain three significant figures? 0.408 9.040 0.0400 9.05 × 1024

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 14

How many significant figures are there in the answer to the following problem?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 15

The mass of a single zinc atom is 1.086 × 10-22 g. This is the same mass as

Accepted Answer

A) 1.086 × 10-16 mg. 
B) 1.086 × 10-25 kg. 
C) 1.086 × 10-28 μg. 
D) 1.086 × 10-31 ng. 
A) 1.086 × 10-16 mg. 
B) 1.086 × 10-25 kg. 
C) 1.086 × 10-28 μg. 
D) 1.086 × 10-31 ng.

Question 16

Convert 35 m3 to litres.

Accepted Answer

A) 3.5 × 10-2 L 
B) 3.5 L 
C) 3.5 × 102 L 
D) 3.5 × 104 L 
A) 3.5 × 10-2 L 
B) 3.5 L 
C) 3.5 × 102 L 
D) 3.5 × 104 L

Question 17

Which of the following statements about the phases of matter is TRUE?

Accepted Answer

A) In both solids and liquids, the atoms or molecules pack closely to one another. 
B) Solids are highly compressible. 
C) Gaseous substances have long-range repeating order. 
D) There is only one type of geometric arrangement that the atoms or molecules in any solid can adopt. 
E) Liquids have a large portion of empty volume between molecules. 
A) In both solids and liquids, the atoms or molecules pack closely to one another. 
B) Solids are highly compressible. 
C) Gaseous substances have long-range repeating order. 
D) There is only one type of geometric arrangement that the atoms or molecules in any solid can adopt. 
E) Liquids have a large portion of empty volume between molecules.

Question 18

A recipe requires 1.89 litres of milk for a soup base. How many quarts are needed?

Accepted Answer

A) 1.79 qts 
B) 2.00 qts 
C) 1.89 qts 
D) 2.10 qts 
E) 2.15 qts 
A) 1.79 qts 
B) 2.00 qts 
C) 1.89 qts 
D) 2.10 qts 
E) 2.15 qts

Question 19

Which of the following represents a physical property?

Accepted Answer

A) Sodium metal is extremely reactive with chlorine gas. 
B) Mercury is a silvery liquid at room temperature. 
C) Aluminum has a tendency to "rust." 
D) Butane is highly flammable. 
E) Argon has an unreactive nature. 
A) Sodium metal is extremely reactive with chlorine gas. 
B) Mercury is a silvery liquid at room temperature. 
C) Aluminum has a tendency to "rust." 
D) Butane is highly flammable. 
E) Argon has an unreactive nature.

Question 20

The density of air under ordinary conditions at 25° C is 1.19 g L-1. How many kilograms of air are in a room that measures 11.0 ft x 11.0 ft and has a 10.0 ft ceiling? (1in.=2.54cm3 (exactly); 1 L =103 cm3)

Accepted Answer

A) 3.66 
B) 0.152 
C) 4.08 ×   
D) 0.0962 
E) 40.8 
A) 3.66 
B) 0.152 
C) 4.08 ×   
D) 0.0962 
E) 40.8

Exam 1: Units of Measurement for Physical and Chemical Change

Ampere is a measure of

How many mL are in 2.54 L?

Which of the following volumes is equal to 40 mL?

Which of the following is an example of a chemical change?

Choose the heterogeneous mixture from the list below.

What is the correct answer, with the proper number of significant figures, for the following calculation? 11.5 × 8.78

A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.71 g mL-1, 1.73 g mL-1, 1.67 g mL-1, 1.69 g mL-1. If the actual value for the density of the sugar solution is 1.40 g mL-1, which statement below best describes her results?

Metre is a measure of

Describe the difference between an intensive and extensive property using examples.

Read the length of the metal bar with the correct number of significant figures.

How many mm are in 3.20 cm?

How many significant figures are in the measurement 20.300 m?

How many of the following numbers contain three significant figures? 0.408 9.040 0.0400 9.05 × 1024

How many significant figures are there in the answer to the following problem?

The mass of a single zinc atom is 1.086 × 10-22 g. This is the same mass as

Convert 35 m3 to litres.

Which of the following statements about the phases of matter is TRUE?

A recipe requires 1.89 litres of milk for a soup base. How many quarts are needed?

Which of the following represents a physical property?

The density of air under ordinary conditions at 25° C is 1.19 g L-1. How many kilograms of air are in a room that measures 11.0 ft x 11.0 ft and has a 10.0 ft ceiling? (1in.=2.54cm3 (exactly); 1 L =103 cm3)

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallury

Transition Metals and Coordination Compounds

Filters

A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.71 g mL^-1, 1.73 g mL^-1, 1.67 g mL^-1, 1.69 g mL^-1. If the actual value for the density of the sugar solution is 1.40 g mL^-1, which statement below best describes her results?

How many of the following numbers contain three significant figures? 0.408 9.040 0.0400 9.05 × 10²⁴

The mass of a single zinc atom is 1.086 × 10^-22 g. This is the same mass as

Convert 35 m³ to litres.

The density of air under ordinary conditions at 25° C is 1.19 g L^-1. How many kilograms of air are in a room that measures 11.0 ft x 11.0 ft and has a 10.0 ft ceiling? (1in.=2.54cm³ (exactly); 1 L =10³ cm³)