Question 1

Define the law of the conservation of energy.

Accepted Answer

Energy is neither created nor destroyed.

Question 2

The outside air temperature is 30°F,what is the temperature in Kelvin?

Accepted Answer

A) 303 K 
B) 307 K 
C) 274 K 
D) 272 K 
A) 303 K 
B) 307 K 
C) 274 K 
D) 272 K D

Question 3

If a solution has a temperature of 355 K,what is its temperature in degrees celsius?

Accepted Answer

A) 165°C 
B) 628°C 
C) 179°C 
D) 79°C 
E) 82°C 
A) 165°C 
B) 628°C 
C) 179°C 
D) 79°C 
E) 82°C E

Question 4

A substance that can't be chemically broken down into simpler substances is considered to be

Accepted Answer

A) a homogeneous mixture. 
B) an element. 
C) a heterogeneous mixture. 
D) a compound. 
E) water. 
A) a homogeneous mixture. 
B) an element. 
C) a heterogeneous mixture. 
D) a compound. 
E) water.

Question 5

What answer should be reported,with the correct number of significant figures,for the following calculation? (965.43 × 3.911)+ 9413.4136

Accepted Answer

A) 13189 
B) 13189.2 
C) 1.32 × 104 
D) 1.3 × 104 
E) 1.319 × 104 
A) 13189 
B) 13189.2 
C) 1.32 × 104 
D) 1.3 × 104 
E) 1.319 × 104

Question 6

Convert 15.0 km to miles.

Accepted Answer

A) 24.1 miles 
B) 9.32 miles 
C) 591 miles 
D) 33.1 miles 
A) 24.1 miles 
B) 9.32 miles 
C) 591 miles 
D) 33.1 miles

Question 7

Round off 00907506 to four significant figures.

Accepted Answer

A) 0091 
B) 9076 
C) 9100 
D) 9.075 × 105 
A) 0091 
B) 9076 
C) 9100 
D) 9.075 × 105

Question 8

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 185-pound man?

Accepted Answer

A) 1.2 kg Ca 
B) 5.7 kg Ca 
C) 1.2 × 102 kg Ca 
D) 5.7 × 102 kg 
A) 1.2 kg Ca 
B) 5.7 kg Ca 
C) 1.2 × 102 kg Ca 
D) 5.7 × 102 kg

Question 9

Read the water level with the correct number of significant figures.

Accepted Answer

A) 5 mL 
B) 5.3 mL 
C) 5.32 mL 
D) 5.320 mL 
E) 5.3200 mL 
A) 5 mL 
B) 5.3 mL 
C) 5.32 mL 
D) 5.320 mL 
E) 5.3200 mL

Question 10

Molecules can be described as

Accepted Answer

A) a mixture of two or more pure substances. 
B) a mixture of two or more elements that has a specific ratio between components. 
C) two or more atoms chemically joined together. 
D) a heterogeneous mixture. 
E) a homogeneous mixture. 
A) a mixture of two or more pure substances. 
B) a mixture of two or more elements that has a specific ratio between components. 
C) two or more atoms chemically joined together. 
D) a heterogeneous mixture. 
E) a homogeneous mixture.

Question 11

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 12

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

Accepted Answer

A) In both solids and liquids,the atoms or molecules are loosely packed. 
B) Solids are highly compressible. 
C) Gases are highly compressible. 
D) Atoms in solids,liquids and gases can move freely 
E) Liquids have a fixed volume. 
A) In both solids and liquids,the atoms or molecules are loosely packed. 
B) Solids are highly compressible. 
C) Gases are highly compressible. 
D) Atoms in solids,liquids and gases can move freely 
E) Liquids have a fixed volume.

Question 13

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

Accepted Answer

An intensive property does not depend on

Question 14

What wavelength of light would you report in units of nm,if the light had a wavelength of
7.60 × 10-10 m?

Accepted Answer

A) 7.60 × 10-3 nm 
B) 7.60 × 10-19 nm 
C) 1.32 nm 
D) 0.760 nm 
E) 760 nm 
A) 7.60 × 10-3 nm 
B) 7.60 × 10-19 nm 
C) 1.32 nm 
D) 0.760 nm 
E) 760 nm

Question 15

The width,length,and height of a large,custom-made shipping crate are 1.22 m,3.22 m,and 0.83 m,respectively.The volume of the box using the correct number of significant figures is ________ m3.

Accepted Answer

A) 3.26057 
B) 3.3 
C) 3.26 
D) 3.261 
E) 3.2606 
A) 3.26057 
B) 3.3 
C) 3.26 
D) 3.261 
E) 3.2606

Question 16

A flash drive contains 4 gigabytes.How many bytes does it contain?

Accepted Answer

4,000,000,000 bytes,

Question 17

Without using a calculator,solve the following problem:

Accepted Answer

A) 1 × 106 
B) 1 × 100 
C) 1 × 10-12 
D) 1 × 10-18 
A) 1 × 106 
B) 1 × 100 
C) 1 × 10-12 
D) 1 × 10-18

Question 18

What answer should be reported,with the correct number of significant figures,for the following calculation? (433.621 - 333.9)× 11.900

Accepted Answer

A) 1.19 × 103 
B) 1.187 × 103 
C) 1.1868 × 103 
D) 1.18680 × 103 
E) 1.186799 × 103 
A) 1.19 × 103 
B) 1.187 × 103 
C) 1.1868 × 103 
D) 1.18680 × 103 
E) 1.186799 × 103

Question 19

Choose the homogeneous mixture from the list below.

Accepted Answer

A) Kool-Aid 
B) mud 
C) ice water 
D) salad dressing 
E) salsa 
A) Kool-Aid 
B) mud 
C) ice water 
D) salad dressing 
E) salsa

Question 20

Choose the pure substance from the list below.

Accepted Answer

A) sea water 
B) sugar 
C) air 
D) lemonade 
E) milk 
A) sea water 
B) sugar 
C) air 
D) lemonade 
E) milk

Define the law of the conservation of energy.

The outside air temperature is 30°F,what is the temperature in Kelvin?

If a solution has a temperature of 355 K,what is its temperature in degrees celsius?

A substance that can't be chemically broken down into simpler substances is considered to be

What answer should be reported,with the correct number of significant figures,for the following calculation? (965.43 × 3.911)+ 9413.4136

Convert 15.0 km to miles.

Round off 00907506 to four significant figures.

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 185-pound man?

Read the water level with the correct number of significant figures.

Molecules can be described as

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 statements about the phases of matter is true?

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

What wavelength of light would you report in units of nm,if the light had a wavelength of 7.60 × 10^-10m?

The width,length,and height of a large,custom-made shipping crate are 1.22 m,3.22 m,and 0.83 m,respectively.The volume of the box using the correct number of significant figures is ________ m³.

A flash drive contains 4 gigabytes.How many bytes does it contain?

Without using a calculator,solve the following problem:

What answer should be reported,with the correct number of significant figures,for the following calculation? (433.621 - 333.9)× 11.900

Choose the homogeneous mixture from the list below.

Choose the pure substance from the list below.

Atoms and Elements

Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

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

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Exam 1: Matter, Measurement, and Problem Solving

Define the law of the conservation of energy.

The outside air temperature is 30°F,what is the temperature in Kelvin?

If a solution has a temperature of 355 K,what is its temperature in degrees celsius?

A substance that can't be chemically broken down into simpler substances is considered to be

What answer should be reported,with the correct number of significant figures,for the following calculation? (965.43 × 3.911)+ 9413.4136

Convert 15.0 km to miles.

Round off 00907506 to four significant figures.

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 185-pound man?

Read the water level with the correct number of significant figures.

Molecules can be described as

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 statements about the phases of matter is true?

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

What wavelength of light would you report in units of nm,if the light had a wavelength of 7.60 × 10-10 m?

The width,length,and height of a large,custom-made shipping crate are 1.22 m,3.22 m,and 0.83 m,respectively.The volume of the box using the correct number of significant figures is ________ m3.

A flash drive contains 4 gigabytes.How many bytes does it contain?

Without using a calculator,solve the following problem:

What answer should be reported,with the correct number of significant figures,for the following calculation? (433.621 - 333.9)× 11.900

Choose the homogeneous mixture from the list below.

Choose the pure substance from the list below.

Atoms and Elements

Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

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

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

What wavelength of light would you report in units of nm,if the light had a wavelength of 7.60 × 10^-10m?

The width,length,and height of a large,custom-made shipping crate are 1.22 m,3.22 m,and 0.83 m,respectively.The volume of the box using the correct number of significant figures is ________ m³.