Chemistry 101 unit 1 - Study guides, Class notes & Summaries

Chapter 03 - Stoichiometry 1. Bromine exists naturally as a mixture of bromine-79 and bromine-81 isotopes. An atom of bromine-79 contains a. 79 protons, 79 electrons, and 35 neutrons. b. 35 protons, 44 neutrons, and 35 electrons. c. 44 protons, 44 electrons, and 35 neutrons. d. 34 protons and 35 electrons only. e. 35 protons, 79 neutrons, and 35 electrons. ANSWER: POINTS: DIFFICULTY: TOPICS: KEYWORDS: b 1 easy 3.1 atomic theory of matter | early atomic theory | general chemistry | is...

Chapter 03 - Stoichiometry 1. Bromine exists naturally as a mixture of bromine-79 and bromine-81 isotopes. An atom of bromine-79 contains a. 79 protons, 79 electrons, and 35 neutrons. b. 35 protons, 44 neutrons, and 35 electrons. c. 44 protons, 44 electrons, and 35 neutrons. d. 34 protons and 35 electrons only. e. 35 protons, 79 neutrons, and 35 electrons. ANSWER: POINTS: DIFFICULTY: TOPICS: KEYWORDS: b 1 easy 3.1 atomic theory of matter | early atomic theory | general chemistry | isoto...

General, Organic, and Biochemistry, 10e (Denniston) Chapter 1 Chemistry - Methods and Measurement 1) Which is the summary of a large amount of scientific information? A) hypothesis B) theory C) scientific law D) technology E) scientific method Answer: C Difficulty: 1 Easy Topic: Study of Chemistry Bloom's: Remember Section number: 01.02 Accessibility: Keyboard Navigation Subtopic: Scientific Method 2) What method used by scientists is the systematic approach to the discovery of new in...

1. What is a unifying principle that explains a body of experimental observations? A. Law B. Hypothesis C. Theory D. Phenomena E. Prediction 2. Which of the following is a tentative explanation for a set of observations? A. Law B. Hypothesis C. Theory D. Phenomena E. Prediction 3. What is the term used for findings that are summarized based on a pattern or trend? A. Law B. Hypothesis C. Theory D. Phenomena E. Prediction 4. Which of the following activities is not a part of good scien...

1. The molecular formula of a particular solid is C8H4O6. Its molecular mass is a. 288 amu. b. 100 amu. c. 296 amu. d. 196 amu. e. 170 amu. ANSWER: d POINTS: 1 DIFFICULTY: easy REFERENCES: 3.1 LEARNING OBJECTIVES: GENE.EBBI.13.67 - Calculate the formula mass from a formula. (Example 3.1) TOPICS: mass and moles of substance stoichiometry KEYWORDS: molecular mass OTHER: general chemistry 2. The hydrocarbon octane has the structural formula CH3(CH2)...

Chapter 1—Molecular Reasons MULTIPLE CHOICE 1. Which of these is the best definition of matter? a. The pull of gravity on an object. b. Anything that has weight and volume. c. Anything that has mass and occupies space. d. Anything that is directly proportional to weight. e. The measure of the amount of space an object occupies. ANS: C PTS: 1 2. Which of these statements is correct? a. The amount of carbon on earth is essentially constant. b. The amount of carbon on earth fluctuates...

Question 1 Correct 4.00 points out of 4.00 The SI base unit of mass is Select one: A. g. B. metric ton. C. mg. D. lb. E. kg. Question 2 Correct 4.00 points out of 4.00 The boiling point for liquid nitrogen is 77 K. What is the temperature in degrees Fahrenheit? Select one: A. –289°F B. –321°F C. –127°F D. 662°F E. 177°F Straighterline CHEM101 General Chemistry I Midterm Exam (New Version June 2024) We are a team of experts offering class attendance for all Stra...

DHN 101 Chapter 1 Questions and Answers Graded A Diet usual pattern of food choices What are some of the things that can influence diet? - ethnic/ cultural background - friends/ family - advertising Nutrients chemicals necessary for proper body functioning necessary for growth, maintenance, and cell repair What can poor habits lead to? heart disease, cancer, stroke, diabetes *these diseases can be combatted by eating more fruits/ vegetables, less salty foods, more whole-grain Nutrition scie...

1-1 Chapter 01 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 Blooms: 2. Understand Difficulty: Easy Gradable: automatic Subtopic: Scientific Method Topic: Study of Chemistry 2. Which of the following is a tentative explanation for a set of observations? A. Law B. Hypothesis C. Theory D. Phenomena E. Prediction Blooms: 2. Understand Difficulty: Easy Gradable: automatic S...

Name Clas Dat : s: e: Chapter 01 - Chemistry: An Introduction 1. Define the following terms: a. science b. chemistry ANSWER: a. Science - a framework for gaining and organizing knowledge. It is a procedure for processing and understanding certain information. b. Chemistry - the science that deals with the matter of the universe and the changes it can undergo. 2. Define the following terms: a. scientific method b. natural law c. hypothesis d. theory ANSWER: a. Scientific method - ...