Test Bank for Introductory Chemistry A.pdf

Test Bank for Introductory Chemistry A.pdf Introductory Chemistry, 2e (Burdge) Chapter 1 Atoms and Elements 1) What is a unifying principle that explains a body of experimental observations? A) law B) hypothesis C) theory D) phenomena E) prediction Answer: C Difficulty: 1 Easy Topic: Study of Chemistry Bloom's: 2. Understand Subtopic: Scientific Method Accessibility: Keyboard Navigation Gradable: automatic 2) 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 Answer: A Difficulty: 1 Easy Topic: Study of Chemistry Bloom's: 2. Understand Subtopic: Scientific Method Accessibility: Keyboard Navigation Gradable: automatic 3 3 3) Which of the following is an example of an observation? A) Gases expand as their temperature increases because the gas molecules are moving more rapidly. B) Paraffin wax begins to melt at 57°C. C) Three samples of wax are heated to 75°C. D) The force acting on an object is equal to its mass times its acceleration. E) Will all waxes melt at the same temperature? Answer: B Difficulty: 1 Easy Topic: Study of Chemistry Bloom's: 2. Understand Subtopic: Scientific Method; Properties of Matter Accessibility: Keyboard Navigation Gradable: automatic 4) When applying the scientific method, it is important to avoid any form of hypothesis. Answer: FALSE Difficulty: 1 Easy Topic: Study of Chemistry Bloom's: 3. Apply Subtopic: Scientific Method Accessibility: Keyboard Navigation Gradable: automatic 5) Which of these scientists developed the nuclear model of the atom? A) John Dalton B) Robert Millikan C) J. J. Thomson D) Henry Moseley E) Ernest Rutherford Answer: E Difficulty: 1 Easy Topic: Components of Matter Bloom's: 1. Remember Subtopic: Structure of the Atom; Atomic Theories Accessibility: Keyboard Navigation Gradable: automatic 4 4 6) Rutherford's experiment with alpha particle scattering by gold foil established that A) protons are not evenly distributed throughout an atom. B) electrons have a negative charge. C) electrons have a positive charge. D) atoms are made of protons, neutrons, and electrons. E) protons are 1840 times heavier than electrons. Answer: A Difficulty: 1 Easy Topic: Components of Matter Bloom's: 2. Understand Subtopic: Structure of the Atom Accessibility: Keyboard Navigation Gradable: automatic 7) Who is credited with discovering the atomic nucleus? A) Dalton B) Gay-Lussac C) Thomson D) Chadwick E) Rutherford Answer: E Difficulty: 1 Easy Topic: Components of Matter Bloom's: 1. Remember Subtopic: Structure of the Atom; Atomic Theories Accessibility: Keyboard Navigation Gradable: automati