Exam 1: Keys to Studying Chemistry Definitions, Units, and Problem Solving

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A dictionary has the following definition for a word: "A tentative explanation that accounts for a set of facts." Which of the following words best fits that definition?

(Multiple Choice)

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Question 21

Select the best statement.

(Multiple Choice)

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Question 22

The average distance from Earth to the Sun is 150 megameters. What is that distance in meters?

(Multiple Choice)

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Question 23

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

(Multiple Choice)

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Question 24

The weight of a coin measured as 1.96235 g on one balance is definitely more accurate than a weight measurement of 1.95 g on another balance.

(True/False)

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Question 25

Isopropyl alcohol, commonly known as rubbing alcohol, boils at 82.4°C. What is the boiling point in kelvins?

(Multiple Choice)

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Question 26

The most significant contribution to modern science made by alchemists was

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Question 27

The SI unit of speed (velocity) is

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Question 28

Talc is a mineral that has low conductivity for heat and electricity and that is not attacked by acid. It is used as talcum powder and face powder. A sample of talc weighs 35.97 g in air and 13.65 g in mineral oil (d = 1.75 g/cm³). What is the density of talc?

(Multiple Choice)

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Question 29

Classify the following properties of hydrogen gas as either intensive or extensive. a. the mass of the gas sample b. the average speed of a molecule in the sample c. temperature d. density e. number of molecules present

(Short Answer)

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Question 30

When applying the scientific method, it is important to avoid any form of hypothesis.

(True/False)

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Question 31

Which measurement is expressed to 4 significant figures?

(Multiple Choice)

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Question 32

The numerical value of any temperature expressed in Celsius is always different from the numerical value of the same temperature in Fahrenheit.

(True/False)

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Question 33

Select the best statement about chemistry before 1800.

(Multiple Choice)

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Question 34

Select the answer with the correct number of decimal places for the following sum: 13.914 cm + 243.1 cm + 12.00460 cm =

(Multiple Choice)

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Question 35

The appropriate number of significant figures in the result of 15.234 - 15.208 is

(Multiple Choice)

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Question 36

Which of the following represents the largest volume?

(Multiple Choice)

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Question 37

When applying the scientific method, a model or theory should be based on experimental data.

(True/False)

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Question 38

Which of the following activities is not a part of good science?

(Multiple Choice)

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Question 39

The average distance between the Earth and the Moon is 240,000 miles. Express this distance in kilometers.

(Multiple Choice)

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Question 40

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Exam 1: Keys to Studying Chemistry Definitions, Units, and Problem Solving

A dictionary has the following definition for a word: "A tentative explanation that accounts for a set of facts." Which of the following words best fits that definition?

Select the best statement.

The average distance from Earth to the Sun is 150 megameters. What is that distance in meters?

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

The weight of a coin measured as 1.96235 g on one balance is definitely more accurate than a weight measurement of 1.95 g on another balance.

Isopropyl alcohol, commonly known as rubbing alcohol, boils at 82.4°C. What is the boiling point in kelvins?

The most significant contribution to modern science made by alchemists was

The SI unit of speed (velocity) is

Talc is a mineral that has low conductivity for heat and electricity and that is not attacked by acid. It is used as talcum powder and face powder. A sample of talc weighs 35.97 g in air and 13.65 g in mineral oil (d = 1.75 g/cm3). What is the density of talc?

Classify the following properties of hydrogen gas as either intensive or extensive. a. the mass of the gas sample b. the average speed of a molecule in the sample c. temperature d. density e. number of molecules present

When applying the scientific method, it is important to avoid any form of hypothesis.

Which measurement is expressed to 4 significant figures?

The numerical value of any temperature expressed in Celsius is always different from the numerical value of the same temperature in Fahrenheit.

Select the best statement about chemistry before 1800.

Select the answer with the correct number of decimal places for the following sum: 13.914 cm + 243.1 cm + 12.00460 cm =

The appropriate number of significant figures in the result of 15.234 - 15.208 is

Which of the following represents the largest volume?

When applying the scientific method, a model or theory should be based on experimental data.

Which of the following activities is not a part of good science?

The average distance between the Earth and the Moon is 240,000 miles. Express this distance in kilometers.

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces Liquids, Solids, and Phase Changes

The Properties of Mixtures Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics Rates and Mechanisms of Chemical Reactions

Equilibrium the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics Entropy, Free Energy, and Reaction Direction

Electrochemistry Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

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Talc is a mineral that has low conductivity for heat and electricity and that is not attacked by acid. It is used as talcum powder and face powder. A sample of talc weighs 35.97 g in air and 13.65 g in mineral oil (d = 1.75 g/cm³). What is the density of talc?