Question 1

Choose the compound from the list below.

Accepted Answer

A) magnesium 
B) water 
C) neon 
D) helium 
E) lithium 
A) magnesium 
B) water 
C) neon 
D) helium 
E) lithium

Question 2

What is the difference between a physical property and a chemical property? Give an example of each.

Accepted Answer

A physical property is something that ca

Question 3

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 4

Read the temperature with the correct number of significant figures.

Accepted Answer

A) 87 °C 
B) 87.2 °C 
C) 87.20 °C 
D) 87.200 °C 
E) 87.2000 °C 
A) 87 °C 
B) 87.2 °C 
C) 87.20 °C 
D) 87.200 °C 
E) 87.2000 °C

Question 5

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 proper...

Question 6

How many significant figures are in the measurement 210 g?

Accepted Answer

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

Question 7

Which of the following numbers has the greatest number of significant figures?

Accepted Answer

A) 0.5070 
B) 0.201 
C) 418000 
D) 6.02 × 1024 
A) 0.5070 
B) 0.201 
C) 418000 
D) 6.02 × 1024

Question 8

How many square kilometres (km2)are in 246 square miles? (1 km = 0.621371 miles)

Accepted Answer

A) 153 km2 
B) 481 km2 
C) 396 km2 
D) 95.0 km2 
E) 637 km2 
A) 153 km2 
B) 481 km2 
C) 396 km2 
D) 95.0 km2 
E) 637 km2

Question 9

What happens to the density of a sample of iron metal as it is heated from room temperature to 100 °C? (This is below the melting point of iron.)

Accepted Answer

Since the mass of the iron sta

Question 10

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

Accepted Answer

A) tea brewing 
B) water boiling 
C) leaves turning colour in the fall 
D) sugar dissolving in water 
E) None of the above is a chemical change. 
A) tea brewing 
B) water boiling 
C) leaves turning colour in the fall 
D) sugar dissolving in water 
E) None of the above is a chemical change.

Question 11

Which of the following is an example of physical change?

Accepted Answer

A) Sugar is dissolved in water. 
B) Bread is baked. 
C) Fireworks explode. 
D) Baking soda decomposes. 
A) Sugar is dissolved in water. 
B) Bread is baked. 
C) Fireworks explode. 
D) Baking soda decomposes.

Question 12

How many dm are in 345 dam?

Accepted Answer

A) 0.345 dm 
B) 3.45 dm 
C) 3450 dm 
D) 34500 dm 
E) 345000 dm 
A) 0.345 dm 
B) 3.45 dm 
C) 3450 dm 
D) 34500 dm 
E) 345000 dm

Question 13

Convert 8.3 mg to μg.

Accepted Answer

A) 0.0083 μg 
B) 83 μg 
C) 830 μg 
D) 8300 μg 
E) 83000 μg 
A) 0.0083 μg 
B) 83 μg 
C) 830 μg 
D) 8300 μg 
E) 83000 μg

Question 14

An unknown metal is heated to 850 °F.What is the temperature in K?

Accepted Answer

A) 1350 K 
B) 1120 K 
C) 460 K 
D) 540 K 
E) 730 K 
A) 1350 K 
B) 1120 K 
C) 460 K 
D) 540 K 
E) 730 K

Question 15

How many significant figures are there in the answer to the following problem? $$\frac { [ ( 143.7 - 121 ) \times 2.06 ] } { 0.600 }$$

Accepted Answer

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

Question 16

If the outside temperature is 35 °C,what is the temperature in °F?

Accepted Answer

A) 95 °F 
B) 31 °F 
C) 121 °F 
D) 5.4 °F 
E) 63 °F 
A) 95 °F 
B) 31 °F 
C) 121 °F 
D) 5.4 °F 
E) 63 °F

Question 17

How many significant figures are in 1009.630 mL?

Accepted Answer

A) 3 
B) 4 
C) 5 
D) 6 
E) 7 
A) 3 
B) 4 
C) 5 
D) 6 
E) 7

Question 18

A person is 1.890 yards tall.How tall is he in cm?

Accepted Answer

A) 172.8 cm 
B) 1.728 cm 
C) 2.232 cm 
D) 4.801 cm 
E) 14.40 cm 
A) 172.8 cm 
B) 1.728 cm 
C) 2.232 cm 
D) 4.801 cm 
E) 14.40 cm

Question 19

Second 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 20

Which of the following is the greatest mass?

Accepted Answer

A) 1000 μg 
B) 1.000 × 10-4 kg 
C) 1.000 × 10-4 cg 
D) 1.000 × 10-8 mg 
A) 1000 μg 
B) 1.000 × 10-4 kg 
C) 1.000 × 10-4 cg 
D) 1.000 × 10-8 mg

Exam 1: Units of Measurement for Physical and Chemical Change

Choose the compound from the list below.

What is the difference between a physical property and a chemical property? Give an example of each.

How many significant figures are in the measurement 20.300 m?

Read the temperature with the correct number of significant figures.

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

How many significant figures are in the measurement 210 g?

Which of the following numbers has the greatest number of significant figures?

How many square kilometres (km2)are in 246 square miles? (1 km = 0.621371 miles)

What happens to the density of a sample of iron metal as it is heated from room temperature to 100 °C? (This is below the melting point of iron.)

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

Which of the following is an example of physical change?

How many dm are in 345 dam?

Convert 8.3 mg to μg.

An unknown metal is heated to 850 °F.What is the temperature in K?

How many significant figures are there in the answer to the following problem? [(143.7−121)×2.06]0.600\frac { [ ( 143.7 - 121 ) \times 2.06 ] } { 0.600 }0.600[(143.7−121)×2.06]​

If the outside temperature is 35 °C,what is the temperature in °F?

How many significant figures are in 1009.630 mL?

A person is 1.890 yards tall.How tall is he in cm?

Second is a measure of

Which of the following is the greatest mass?

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 Metallurgy

Transition Metals and Coordination Compounds

Filters

How many square kilometres (km²)are in 246 square miles? (1 km = 0.621371 miles)

How many significant figures are there in the answer to the following problem? $\frac { [ ( 143.7 - 121 ) \times 2.06 ] } { 0.600 }$