Study guides, Class notes & Summaries

Student name:__________ 1) What is a unifying principle that explains a body of experimental observations? A) law B) hypothesis C) theory D) phenomena E) prediction Question Details Bloom's : 2. Understand Difficulty : Easy Subtopic : Scientific Method Topic : Study of Chemistry Chapter : 01 Chemistry: The Science of Change Accessibility : Keyboard Navigation 2) Which of the following is a tentative explanation for a set of observations? A) law B) hypothesis C) theory D) pheno...

Chapter 1: Elements & Compounds Introduction 1. Which of the following correctly describes one of the differences between compounds and mixtures? (a) Compounds contain more than one element but mixtures do not. (b) Compounds have a constant composition but mixtures do not. (c) It is easier to separate the elements in a compound than it is to separate the elements in a mixture. (d) All of these statements are true. (e) None of these statements are true. Answer: (b) 2. Which of the foll...

Chapter 1 Scientific Measurements Multiple Choice Questions 1. A tentative explanation used to explain observed facts or laws is called a. the scientific method. b. a scientific law. c. a theory. d. a hypothesis. e. an empirical fact. Answer: d Section 1.1 Difficulty Level: easy 2. A broad generalization based on the results of many experiments is called a. the scientific method. b. a scientific law. c. a theory. d. a hypothesis. e. an empirical fact. Answer: b Section 1.1 Di...

Chapter 1: The Nature of Chemistry 1. Modern research requires a. communication skills b. collaboration skills c. knowledge in a particular field d. a willingness to think about the world e. all of the choices above ANSWER: e POINTS: 1 TOPICS: 1.1 Why Care About Chemistry? OTHER: Comprehension NOTES: Grasp meaning 2. For a chemist, understanding a chemical reaction means: a. knowing what makes up a reacting atom. b. knowing what atoms make up a reacting molecule. c. knowing how at...

Chapter 1 Matter, Energy, and Measurement Multiple Choice 1. Which of the following is MOST commonly used to assess the strength of a bone? a. bone density b. nutrition and exercise data c. bone mass d. blood samples e. calcium measurement ANSWER: a 2. A person with a T-score of less than –2.5 has a bone mineral density that ______ normal and is said to have ______. a. is; normal bone density b. is less than; normal bone density c. is less than; osteoporosis d. is greater than; o...

Chapter 01 - Chemistry: Matter on the Atomic Scale 1. Which of the following would you classify as nano-scale? a. An amoeba (a unicellular animal) b. Grounded coffee c. A water molecule d. A cell membrane e. An ore of gold ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 3/5/2014 6:46 PM DATE MODIFIED: 1/11/2017 4:38 AM The following information will be used to answer questions 2-6. A) B) C) D) E) 2. Which of the figures above depicts a gaseou...

General, Organic and Biological Chemistry, 4e (Smith) Chapter 1 Matter and Measurement 1) Which is NOT an example of a pure substance? A) Sugar B) Air C) Aluminum foil D) Water E) A block of dry ice Answer: B Difficulty: 1 Easy Topic: Study of Chemistry Bloom's: 1. Remember Subtopic: Classification and States of Matter Accessibility: Keyboard Navigation Chapter: 01 2) Which is an example of a physical change? A) The rusting of an iron nail B) The burning of propane in a gas gr...

General, Organic, and Biological Chemistry, 3e (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 Global: G1 LO: 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 Global: G1 LO: 1.1 3) Which of the following represents a homogeneous mi...

General, Organic, and Biological Chemistry, 4e (Frost) Chapter 1 Chemistry Basics — Matter and Measurement 1.1 Multiple Choice Questions 1) Which of the following is an example of a heterogeneous mixture? A) Sugar water B) Trail mix C) Air D) Vodka Answer: B Diff: 1 Section: 1-1 Global: G1 LO: 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 Global: G1 LO: 1.1 3) Which of the following represents a ...

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) In the number 12.345, the 3 is in the ________ place. 1) A) tens B) ones C) tenths D) hundredths E) thousandths Answer: C Diff: 0 Type: MC TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 2) In the number 123.45, the digit 5 is in the hundreds place. 2) Answer: True False Diff: 0 Type: TF 3) Para...