TEST BANK FOR INQUIRY INTO LIFE 16TH EDITION BY MADER

Chapter 2 The Molecules of Cells 1) If an element has an atomic number of 12, how many electrons are in its outermost shell? A) 1 B) 10 C) 8 D) 2 E) 12 Answer: D Explanation: Two electrons fill the innermost shell and eight fill the next, leaving two for the outermost shell. Section: 02.01 Topic: Atomic Structure Bloom's: 3. Apply Accessibility: Keyboard Navigation Learning Outcome: 02.01.01 Describe how protons, neutrons, and electrons relate to atomic structure. 2) The nucleus of an atom contains A) neutrons and electrons. B) electrons only. C) protons, neutrons, and electrons. D) protons and neutrons. E) neutrons only. Answer: D Explanation: The nucleus contains protons and neutrons; electrons orbit the nucleus. Section: 02.01 Topic: Atomic Structure Bloom's: 1. Remember Accessibility: Keyboard Navigation Learning Outcome: 02.01.01 Describe how protons, neutrons, and electrons relate to atomic structure. 3) Which of the following subatomic particles will be found orbiting the nucleus of the atom? A) protons and neutrons B) only electrons C) electrons and neutrons D) only neutrons E) only protons Answer: B Explanation: The nucleus of an atom will contain the protons and neutrons. Electrons are found in the electron orbitals that orbit the nucleus. Section: 02.01 Topic: Atomic Structure Bloom's: 1. Remember Accessibility: Keyboard Navigation Learning Outcome: 02.01.01 Describe how protons, neutrons, and electrons relate to atomic structure. 4) If an element has an atomic number of 15, then A) the atomic mass must also be 15. B) the atom has 15 electrons. C) there are 7 electrons in the outermost shell. D) the atom has 15 neutrons. E) the atom must have only one orbital. Answer: B Explanation: In an electrically neutral atom, the number of protons (the atomic number) is the same as the number of electrons. The atom would need three orbitals to accommodate 15 electrons, and there would be 5 electrons in its outermost shell. The atomic mass includes the protons and the neutrons; the number of neutrons is not specified in this question. Section: 02.01 Topic: Atomic Structure Bloom's: 3. Apply Accessibility: Keyboard Navigation Learning Outcome: 02.01.02 Understand how to interpret the periodic table of elements.