Duke University

Chapter 2: The Structure of the Atom and the Periodic Table 1. What are the three primary particles found in an atom? A) neutron, positron, and electron B) electron, neutron, and proton C) electron, proton, and nucleon D) positron, electron, and nucleon E) proton, electron, and neutrino Ans: B 2. What is the value of the mass number in the isotope 131 53I? A) 53 B) 78 C) 126.9 D) 131 E) 184 Ans: D 3. What term is used to describe atoms of the same element that have different mass...

General, Organic, and Biochemistry, 2e (Frost) Chapter 1 Chemistry Basics— Matter and Measurement 1.1 Multiple-Choice 1) Which of the following is an example of a heterogeneous mixture? A) Sugar water B) Blood C) Air D) Vodka Answer: B Diff: 1 Section: 1-1 2) Which of the following is a pure substance? A) Sugar B) Sand C) Gold D) Maple syrup Answer: C Diff: 1 Section: 1-1 3) All the different kinds of substances that make up all of the material of the universe are known col...

General, Organic, and Biological Chemistry, 4e (Timberlake) Chapter 2 Energy and Matter 2.1 Multiple-Choice Questions 1) An example of kinetic energy is A) a coiled spring. B) running water. C) a tree. D) natural gas. E) chemical energy. Answer: B Objective: 2.1 Global Outcomes: GO7 2) The energy associated with the motion of particles in a substance is called A) temperature. B) electrical energy. C) heat. D) chemical energy. E) potential energy. Answer: C Objective: 2.1 Glob...

Introductory Chemistry: Concepts and Critical Thinking, 7e (Cor Chapter 1 Introduction to Chemistry Key Terms 1) What is the term for the pseudoscience that attempted to discove magic elixir for immortality? A) alchemy B) biochemistry C) inorganic chemistry D) organic chemistry E) none of the above

2 Chapter 1 The Foundations of Biochemistry Chapter 1 The Foundations of Biochemistry Multiple Choice Questions 1. Cellular foundations Pages: 2–4 Difficulty: 1 Ans: C In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes. 2. Cellular foundations Page: 3 Difficulty: 1 Ans: E A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: A) DNA. B) photosynthetic capability. C) plasma m...

Chapter 1 Multiple Choice Questions: Topic: General Section: Intro Difficulty Level: Easy 1. Chemical reactions occur as a result of: A) Attraction between opposite charges B) Nucleus–Nucleus interactions C) Motion of electrons D) Like atoms interacting E) Combining two chemicals Ans: C Topic: General Section: 1.1 Difficulty Level: Easy 2. Credit for the first synthesis of an organic compound from an inorganic precursor is generally ascribed to: A) Berzelius B) Arrhenius C) ...

Essay 0 points Question Give the ground-state electron configuration for carbon (atomic number 6). Answer 1s22s22p 12p 1 or 1s22s22p2 x y Essay 0 points Question Give the ground-state electron configuration for fluorine (atomic number 9). Answer 1s22s22p 2 2p 2 2p 1 or 1s22s22p5 x y z Essay 0 points Question Give the ground-state electron configuration for magnesium (atomic number 12). Answer 1s22s22p63s2 Essay 0 points Question How many electrons does silicon have in its valence she...

Chapter 03 - Organic Compounds: Alkanes and Their Stereochemistry Exhibit 3-1 MATCH a structure below to each of the following descriptions and place the letter corresponding to the structure in the blank. 1. _____ is an amino aldehyde. ANSWER: B POINTS: 1 2. _____ is an aromatic ketone. ANSWER: E POINTS: 1 3. _____ is a tertiary chloride. ANSWER: C POINTS: 1 4. _____ is a cyclic alkane with two cis methyl groups. ANSWER: C POINTS: 1 5. Circle and name each functional group in th...

Chapter One MULTIPLE CHOICE QUESTIONS Topic: General Section: 1.1 Difficulty Level: Easy 1. Credit for the first synthesis of an organic compound from an inorganic precursor is usually given to: A) Berzelius B) Arrhenius C) Kekule D) Wohler E) Lewis Ans: D Topic: Atomic Orbitals, Hybridization Section: 1.2 Difficulty Level: Easy 2. How many sigma 1s-2sp3 bonds are there in ethane? A) 7 B) 6 C) 5 D) 3 E) 1 Ans: B

Organic Chemistry, 7e (Bruice) Chapter 1 Remembering General Chemistry: Electronic Structure and Bonding 1) Atoms with the same number of protons but different numbers of neutrons are called . Answer: isotopes Section: 1-1 2) Which of the following elements does this electronic configuration represent? 1s2 2s2 2p5 A) F B) C C) N D) Al E) O Answer: A Section: 1-2 3) How many unpaired electrons are present in the isolated carbon atom (atomic number = 6)? A) none B) one C) two D)...