Chemistry

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...

General, Organic, and Biological Chemistry, 3e (Timberlake) Chapter 1 Measurements 1.1 Multiple-Choice Questions 1) 5.21 cm is the same distance as A) 0.0521 m. B) 52.1 dm. C) 5.21 mm. D) 0.00521 km. E) 5210 m. Answer: A 2) How many centimeters are there in 57.0 in.? A) 22 cm B) 0.0445 cm C) 145 cm D) 22.4 cm E) 140 cm Answer: C 3) The amount of space occupied by a substance is its A) mass. B) density. C) weight. D) length. E) volume. Answer: E 4) Which of the following i...

Introductory Chemistry: Concepts and Critical Thinking, 7e (Corwin) Chapter 1 Introduction to Chemistry Key Terms 1) What is the term for the pseudoscience that attempted to discover a universal cure for disease and a magic elixir for immortality? A) alchemy B) biochemistry C) inorganic chemistry D) organic chemistry E) none of the above Answer: A Section: Key Terms 2) What is the term for the study of chemical substances derived from plants and animals? A) biochemistry B) green ch...

Introductory Chemistry, 4e (Tro) Chapter 1 The Chemical World True/False Questions 1) Chemicals make up everything around you, including your own body. Answer: TRUE Diff: 1 Page Ref: 1.1 2) Chemists study the properties of substances and the particles that compose those substances. Answer: TRUE Diff: 1 Page Ref: 1.1 3) When a sealed can of soda pop is opened, the carbon dioxide gas fizzes out because the pressure is released. Answer: TRUE Diff: 1 Page Ref: 1.1 4) The properties of wa...

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...