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Chapter 1--Basic Concepts of Chemistry copy 1. A hypothesis is a A. mathematical formula that models a pattern of behavior. B. concise statement of a behavior that is always the same under the same conditions. C. set of experiments designed to test a theory. D. well-tested, unifying principle that explains a body of facts. E. tentative explanation or prediction based upon experimental observations. 2. A theory is a A. concise statement of a behavior that is always the same under the same...

Chapter 1: Chemistry: The Science of Change 1. What is a unifying principle that explains a body of experimental observations? A) Law B) Hypothesis C) Theory D) Phenomena E) Prediction Ans: C Difficulty: Easy 2. What is defined as a tentative explanation for observations that are made that result in the formulation of this concept? A) Law B) Hypothesis C) Theory D) Phenomena E) Prediction Ans: B Difficulty: Easy 3. What is term used for findings that are summarized based on a pattern or ...

Chemistry for Changing Times, 13e (Hill) Chapter 1 Chemistry 1.1 Multiple Choice Questions 1) Which science is primarily concerned with the study of matter and the changes it undergoes? A) biology B) chemistry C) geology D) physics Answer: B Diff: 1 Page Ref: Sec. 1.1 LO: 1.1 2) What is natural philosophy? A) a belief in natural foods B) an experimental approach to philosophy C) an experimental approach to the study of nature D) theoretical speculation about nature Answer: D Dif...

Chapter 01 - The Air We Breathe Multiple Choice Questions 1. Of five major gaseous components of air, which is the only one to vary significantly in concentration from place to place and from day to day? A. water vapor B. carbon dioxide C. nitrogen D. argon 2. Which two gases make up more than 95% of an inhaled breath? A. NO2 and N2 B. CO2 and O2 C. O2 and N2 D. N2 and Ar 3. What is the primary component of an exhaled breath? A. N2 B. O2 C. CO2 D. H2O

Chemistry: Structure and Properties (Tro) Chapter 1 Atoms 1.1 Multiple Choice Questions 1) An element has three stable isotopes with masses of 27.977 amu, 28.976 amu, and 29.973 amu. The heavier two isotopes have an abundance of 4.68% and 3.09%, respectively. What is the mass of the element? A) 27.684 amu B) 29.251 amu C) 28.085 amu D) 30.107 amu E) 28.991 amu Answer: C Diff: 5 Var: 1 Page Ref: 1.9 LO: 1.6 2) All of the following will lead to a homogeneous mixture except A) sugar ...

Test Bank Chapter 1 Laboratory Basics 1. Reverse osmosis (RO) is described as a process: A. In which water is forced through a semipermeable membrane that acts as a molecular filter. B. Used to purify liquid chemicals. C. In which water forced through a carbon filter eliminates organic solvents. D. In which salt in water moves through filter paper. 2. Activated carbon filters remove: A. Ions from water. B. Organic compounds from water. C. Acids and bases from water. D. Large particul...

Essential Organic Chemistry, 3e (Bruice) Chapter 3 An Introduction to Organic Compounds 1) Which of the following is a tertiary amine? A) B) C) D) E) Answer: E Diff: 1 Section: 3-1 Objective: G2, G3 LO: 3.2

Fundamentals of General, Organic, and Biological Chemistry, 7e (McMurry) Chapter 1 Matter and Measurements 1) Which of the following is a chemical property? A) melting point B) mass C) flammability D) volume E) temperature Answer: C Diff: 1 Section: 1.1 2) All of the following are examples of matter except A) heat. B) air. C) water. D) salt. E) plants. Answer: A Diff: 1 Section: 1.1 3) Which of the following is a physical property? A) flammability B) conductivity C) abilit...

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...