Introductory Chemistry Midterm Exam - 2146 Verified Questions

Introductory Chemistry

Midterm Exam

Course Introduction

Introductory Chemistry provides students with a foundational understanding of the basic principles of chemistry, including atomic structure, chemical bonding, stoichiometry, the periodic table, and the properties of gases, liquids, and solids. Emphasizing both conceptual knowledge and practical application, this course covers fundamental laboratory techniques, safe lab practices, and problem-solving skills essential for further study in the sciences. By combining lectures, discussions, and hands-on experiments, students develop an appreciation for the role of chemistry in everyday life and its connections to other scientific disciplines.

Recommended Textbook

Introductory Chemistry 5th Edition by Nivaldo J. Tro

Available Study Resources on Quizplus

19 Chapters

2146 Verified Questions

2146 Flashcards

Source URL: https://quizplus.com/study-set/3731

Page 2

Chapter 1: The Chemical World

Available Study Resources on Quizplus for this Chatper

59 Verified Questions

59 Flashcards

Source URL: https://quizplus.com/quiz/74402

Sample Questions

Q1) Which statement about a hypothesis is TRUE?

A)It is a tentative interpretation or explanation.

B)It has the potential to be proven wrong.

C)It can be tested by experiments.

D)It is part of the scientific method.

E)All of the above statements are true.

Answer: E

Q2) Which of the following is an example of an observation?

A)All matter is composed of small,indestructible particles called atoms.

B)Reactions occur due to the transfer of electrons.

C)When a can of soda pop is opened,a fizzing sound is heard.

D)Flammable objects contain phlogiston.

E)none of the above

Answer: C

Q3) Antoine Lavoisier proposed the atomic theory.

A)True

B)False

Answer: False

To view all questions and flashcards with answers, click on the resource link above.

3

Chapter 2: Measurement and Problem Solving

Available Study Resources on Quizplus for this Chatper

131 Verified Questions

131 Flashcards

Source URL: https://quizplus.com/quiz/74403

Sample Questions

Q1) The correct multiplier for the prefix femto is:

A)10^-15

B)10^-12

C)10¹²

D)10⁹

E)none of the above

Answer: A

Q2) Trailing zeros at the end of a number,but before an implied decimal point,are ambiguous.

A)True

B)False

Answer: True

Q3) The density of iron is 7.86 g/cm³while the density of lead is 11.4 g/cm³.If you had one cm³ of each metal,the piece of iron would have a greater mass.

A)True

B)False

Answer: False

To view all questions and flashcards with answers, click on the resource link above.

4

Chapter 3: Matter and Energy

Available Study Resources on Quizplus for this Chatper

118 Verified Questions

118 Flashcards

Source URL: https://quizplus.com/quiz/74404

Sample Questions

Q1) How many Calories are in 575.0 calories?

A)575,000

B)0.5750

C)137.6

D)2,404

E)none of the above

Answer: B

Q2) The temperature of 0°F is colder than the temperature of 0°C.

A)True

B)False

Answer: True

Q3) Which of the following is NOT true?

A)The degree "symbol" is not used with the Kelvin scale.

B)A kelvin degree is the same size as a Celsius degree.

C)The Kelvin temperature scale avoids use of negative numbers.

D)Water boils at the same temperature value on both the Kelvin and Celsius scales.

E)none of the above

Answer: D

To view all questions and flashcards with answers, click on the resource link above.

5

Chapter 4: Atoms and Elements

Available Study Resources on Quizplus for this Chatper

112 Verified Questions

112 Flashcards

Source URL: https://quizplus.com/quiz/74405

Sample Questions

Q1) Which statement below accurately describes the contributions of Thomson?

A)ancient Greek philosopher who proposed that matter was continuous

B)created the modern periodic table

C)proposed the modern Atomic Theory

D)discovered the existence of electrons

E)none of the above

Q2) All carbon atoms have exactly 6 protons.

A)True

B)False

Q3) How many protons and neutrons are in Cl-37?

A)20 protons,17 neutrons

B)17 protons,37 neutrons

C)17 protons,20 neutrons

D)37 protons,17 neutrons

E)none of the above

Q4) Mendeleev is best remembered for his pioneering work on determining atomic structure.

A)True B)False

To view all questions and flashcards with answers, click on the resource link above. Page 6

Chapter 5: Molecules and Compounds

Available Study Resources on Quizplus for this Chatper

110 Verified Questions

110 Flashcards

Source URL: https://quizplus.com/quiz/74406

Sample Questions

Q1) The proper name for the acid HF is hydrofluoric acid.

A)True

B)False

Q2) What is the name of CoS?

A)cobalt(II)sulfide

B)cobalt sulfide

C)cobalt monosulfide

D)cobaltous sulfur

E)none of the above

Q3) How many C atoms are in ammonium acetate?

A)5

B)2

C)1

D)3

E)none of the above

Q4) Although some substances we encounter in our routine lives are elements,most occur in the combined state.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 7

Chapter 6: Chemical Composition

Available Study Resources on Quizplus for this Chatper

118 Verified Questions

118 Flashcards

Source URL: https://quizplus.com/quiz/74407

Sample Questions

Q1) Determine the empirical formula of a compound containing 83% potassium and 17.0% oxygen.

A)KO

B)KO₂

C)K₂O₃

D)K₂O

E)none of the above

Q2) One mole of (NH₄)₂HPO₄ contains how many moles of hydrogen atoms?

A)4

B)2

C)8

D)9

E)none of the above

Q3) How many moles of bromine gas are in 37.7 grams?

A)0.236

B)0.472

C)3.01 × 10³

D)79.9

E)none of the above

To view all questions and flashcards with answers, click on the resource link above. Page 8

Chapter 7: Chemical Reactions

Available Study Resources on Quizplus for this Chatper

113 Verified Questions

113 Flashcards

Source URL: https://quizplus.com/quiz/74408

Sample Questions

Q1) All of the following compounds are soluble in water EXCEPT:

A)NaCl.

B)CaCl_2.

C)FeCl_3.

D)NH₄Cl.

E)PbCl_2.

Q2) What are the coefficients for the following reaction when it is properly balanced? ___O₂ + ___CH₄ ___CO₂ + ___H₂O

A)2,1,3,1

B)2,3,2,2

C)1,3,2,1

D)2,1,1,2

E)none of the above

Q3) The following reaction IS balanced: BaCl₂ + H₂SO₄ 2HCl + BaSO₄

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 9

Chapter 8: Quantities in Chemical Reactions

Available Study Resources on Quizplus for this Chatper

115 Verified Questions

115 Flashcards

Source URL: https://quizplus.com/quiz/74409

Sample Questions

Q1) The primary cause of increasing greenhouse gases is:

A)the burning of vast amounts of rain forests.

B)the production of CO₂ by respiration.

C)the increased use of natural gas,petroleum and coal.

D)the release of CO₂ by decreasing solubility in the ocean.

E)none of the above

Q2) How many moles of aluminum oxide are produced according to the reaction below given that you start with 10.0 grams of Al and 19.0 grams of O₂?

Reaction: 4Al + 3O₂ 2Al₂O₃

A)0.396

B)0.185

C)0.741

D)5.00

E)not enough information

Q3) Given the recipe: 2 cups flour + 1 egg + 3 oz blueberries 4 muffins.

You can make 9 muffins from 3.5 cups of flour.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above.

Page 10

Chapter 9: Electrons in Atoms and the Periodic Table

Available Study Resources on Quizplus for this Chatper

111 Verified Questions

111 Flashcards

Source URL: https://quizplus.com/quiz/74410

Sample Questions

Q1) Which one of the following types of electromagnetic radiation has a higher energy per photon than visible radiation?

A)microwave

B)ultraviolet

C)radio

D)infrared

E)none of the above

Q2) Which of the following statements about the quantum-mechanical model is FALSE?

A)Orbitals are a probability map of finding electrons.

B)Electrons do not behave as particles.

C)Orbitals are specific paths electrons follow.

D)Electron paths cannot be described exactly.

E)All of the above are correct statements.

Q3) The Pauli exclusion principle states that orbitals may hold no more than two electrons of identical spins.

A)True

B)False

Q4) Ultraviolet light produces suntans and sunburns.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 11

Chapter 10: Chemical Bonding

Available Study Resources on Quizplus for this Chatper

109 Verified Questions

109 Flashcards

Source URL: https://quizplus.com/quiz/74411

Sample Questions

Q1) What is the angle between electron groups in the trigonal planar electron geometry?

A)90°

B)109.5°

C)120°

D)180°

E)not enough information

Q2) The sulfate ion contains 28 valence electrons.

A)True

B)False

Q3) A correct Lewis structure for an atom of carbon would have eight dots surrounding the symbol of the element.

A)True

B)False

Q4) When calculating the number of electrons for the Lewis structure of a polyatomic ion,subtract one electron for each negative charge.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above.

12

Chapter 11: Gases

Available Study Resources on Quizplus for this Chatper

122 Verified Questions

122 Flashcards

Source URL: https://quizplus.com/quiz/74412

Sample Questions

Q1) There is a large distance between gas particles as compared to their relative size.

A)True

B)False

Q2) Which of the following statements is TRUE for gases?

1.The temperature of a gas is inversely proportional to its pressure.

2.The volume of a gas is directly proportional to the pressure in torr.

3.The pressure of a gas is due to collisions of the gas molecules.

A)1 only

B)2 only

C)3 only

D)1 and 2 only

E)1 and 3 only

Q3) Straws work because sucking creates a pressure difference.

A)True

B)False

Q4) For all gas law calculations,the temperature must be in kelvins.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 13

Chapter 12: Liquids,solids,and Intermolecular Forces

Available Study Resources on Quizplus for this Chatper

114 Verified Questions

114 Flashcards

Source URL: https://quizplus.com/quiz/74413

Sample Questions

Q1) Intermolecular forces hold atoms and molecules in place in a solid.

A)True

B)False

Q2) Which substance is most likely to be miscible with water?

A)CF₄

B)Br₂

C)CS₂

D)CHCl₃

E)none of the above

Q3) Intermolecular forces are responsible for:

A)the taste sensations.

B)the shape of protein molecules.

C)the function of DNA.

D)the existence of liquids and solids.

E)all of the above

Q4) Attraction between the Na⁺ cation and Cl^- anion holds the solid lattice of sodium chloride together.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 14

Chapter 13: Solutions

Available Study Resources on Quizplus for this Chatper

122 Verified Questions

122 Flashcards

Source URL: https://quizplus.com/quiz/74414

Sample Questions

Q1) The oxygen in the air we breath is classified as:

A)the solute in a homogeneous gas mixture.

B)the solvent in a homogeneous gas mixture.

C)the solute in a heterogeneous gas-liquid mixture.

D)the solvent in a simple mixture.

E)none of the above

Q2) The solubility of gases in water:

A)is independent of temperature.

B)increases with increasing temperature.

C)decreases with increasing temperature.

D)gases are not soluble in water.

E)none of the above

Q3) The major component in a solution is called the solute.

A)True

B)False

Q4) A semipermeable membrane allows only half the amount of a substance to pass through it.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 15

Chapter 14: Acids and Bases

Available Study Resources on Quizplus for this Chatper

117 Verified Questions

117 Flashcards

Source URL: https://quizplus.com/quiz/74415

Sample Questions

Q1) Acids have a bitter taste.

A)True

B)False

Q2) Which solution below has the highest concentration of hydroxide ions?

A)pH = 3.21

B)pH = 12.49

C)pH = 7.00

D)pH = 10.12

E)pH = 7.93

Q3) In examining the formula for acetic acid,HC₂H₃O₂,the ionizable hydrogen atom(s)is/are:

A)the H on the left.

B)one of the H's on the right-side.

C)all of the H's on the right-side.

D)all four H's.

E)none of the above.

Q4) The main component of stomach acid is sulfuric acid.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 16

Chapter 15: Chemical Equilibrium

Available Study Resources on Quizplus for this Chatper

118 Verified Questions

118 Flashcards

Source URL: https://quizplus.com/quiz/74416

Sample Questions

Q1) Which of the following changes will increase the reaction rate?

A)an increase in the concentration of the products

B)a decrease of the reaction temperature

C)allowing more time for the reaction

D)an increase in the concentration of reactants

E)all of the above

Q2) Which statement about activation energy is FALSE?

A)Activation energy is an energy hump that normally exists between reactants and products.

B)The higher the activation energy,the slower the reaction rate.

C)The lower the activation energy,the faster the reaction rate.

D)Increasing the temperature lowers the activation energy.

E)All of the above are true.

Q3) If an equilibrium reaction shifts to the right when the system is cooled,this indicates that the reaction is endothermic.

A)True

B)False

Q4) Living things are in equilibrium with their surroundings.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 17

Chapter 16: Oxidation and Reduction

Available Study Resources on Quizplus for this Chatper

113 Verified Questions

113 Flashcards

Source URL: https://quizplus.com/quiz/74417

Sample Questions

Q1) The rusting of iron is an example of the process known as corrosion.

A)True

B)False

Q2) Electrical current can be used to drive a nonspontaneous redox reaction.

A)True

B)False

Q3) Corrosion can be prevented by all of the following EXCEPT:

A)painting.

B)galvanizing.

C)sacrificial anode.

D)sacrificial cathode.

E)none of the above

Q4) Reduction is the gain of electrons.

A)True

B)False

Q5) Redox reactions must involve the gain or loss of oxygen atoms.

A)True

B)False

Q6) Distinguish between a galvanic (voltaic)cell and an electrolytic cell.

Page 18

To view all questions and flashcards with answers, click on the resource link above.

Chapter 17: Radioactivity and Nuclear Chemistry

Available Study Resources on Quizplus for this Chatper

115 Verified Questions

115 Flashcards

Source URL: https://quizplus.com/quiz/74418

Sample Questions

Q1) Which of the following statements about the creation of the nuclear bomb is FALSE?

A)Einstein lobbied President Roosevelt to pursue creation of the bomb.

B)American war intelligence feared the Germans were ahead of the Allies in developing nuclear weapons in WWII.

C)J.R.Oppenheimer headed the Manhattan Project.

D)The Germans were defeated by the time the bomb had been developed.

E)All of the above are true.

Q2) Phosphorous-32 has a half-life of 14.3 days while radon-222 has a half-life of 3.8 days,so phosphorous-32 is considered more active.

A)True

B)False

Q3) A gamma ray has no charge and no mass.

A)True

B)False

Q4) In a Geiger-Muller counter,radioactive particles pass through NaI which emits UV-Vis light.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above.

Page 19

Chapter 18: Organic Chemistry

Available Study Resources on Quizplus for this Chatper

119 Verified Questions

119 Flashcards

Source URL: https://quizplus.com/quiz/74419

Sample Questions

Q1) The generic condensed structural formula for carboxylic acids is RCOOH.

A)True

B)False

Q2) Which of the following statements about carbon is FALSE?

A)Carbon must always have four bonds.

B)Carbon can bond to itself.

C)Carbon can have either a tetrahedral,trigonal planar or linear geometry.

D)Carbon can form into linear,branched and cyclic compounds.

E)none of the above

Q3) Name the following alkene: CH₃ - CH = C - CH - CH₃

| |

CH₃ CH₃

A)2-propyl-2-isobutene

B)1-propyl-2-butene

C)1,1,3-trimethyl-1-pentene

D)3,4-dimethyl-2-pentene

E)none of the above

Q4) It was originally thought that organic compounds had to come from living things.

A)True

B)False

Page 20

To view all questions and flashcards with answers, click on the resource link above.

Chapter 19: Biochemistry

Available Study Resources on Quizplus for this Chatper

110 Verified Questions

110 Flashcards

Source URL: https://quizplus.com/quiz/74420

Sample Questions

Q1) A codon is a section of DNA that specifies a single amino acid.

A)True

B)False

Q2) The portion of the cell that contains the genetic information is called ________.

A)cytoplasm

B)membrane

C)nucleus

D)mitochondria

E)none of the above

Q3) Carbohydrates provide short term energy storage in cells.

A)True

B)False

Q4) The term hydrophilic indicates a substance is repelled by water.

A)True

B)False

Q5) The nonpolar part of a phospholipid is repelled by water and is said to be hydrophilic.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 21