Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 3MC
Isotopes are defined as
a. atoms of the same element with different numbers of protons.
b. radioactive elements.
c. stable elements.
d. atoms of the same element with different numbers of neutrons.
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Check out a sample textbook solutionStudents have asked these similar questions
The smallest particle of an element that still has the chemical characteristics of that element is a(n)a. electron. c. neutron. e. atom.b. molecule. d. proton.
Isotopes differ from each other only in the number of electrons they contain.
Select one:
a. True
b. False
The nucleus of an atom contains:
a.
neutrons and electrons
b.
protons and electrons
c.
protons only
d.
neutrons and protons
e.
neutrons only
Chapter 2 Solutions
Biology: Life on Earth (11th Edition)
Ch. 2 - 1. Which of the following is false?
a. An element...Ch. 2 - Prob. 2MCCh. 2 - Isotopes are defined as a. atoms of the same...Ch. 2 - Molecules a. always consist of different elements...Ch. 2 - 5. Covalent bonds
a. link water molecules in...Ch. 2 - 1. An atom consists of an atomic nucleus composed...Ch. 2 - Prob. 2FTBCh. 2 - Prob. 3FTBCh. 2 - An atom with an outermost electron shell that is...Ch. 2 - Water is described as _____ because each water...
Ch. 2 - Based on Table 2–1 how many neutrons are there in...Ch. 2 - 2. Distinguish between atoms and molecules and...Ch. 2 - 3. Compare and contrast covalent bonds and ionic...Ch. 2 - 4. Explain how polar covalent bonds allow hydrogen...Ch. 2 - Why can water absorb a great amount of heat with...Ch. 2 - 6. Describe how water dissolves a salt.
Ch. 2 - Define pH scale, acid, base, and buffer. How do...Ch. 2 - Prob. 1ACCh. 2 - Prob. 2ACCh. 2 - You can now buy “whiskey stones” made of granite,...
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- The name given to the atomic particle found outside the nucleus of an atom isa. proton.b. neutron.c. electron.d. ion.arrow_forwardWhich of the following statements is incorrect? a. Isotopes have the same atomic number and different mass numbers. b. Atoms have about the same number of electrons as protons. c. All molecules consist of atoms. d. Free radicals are dangerous because they emit energyarrow_forwardFor 42He*2 The atomic number is f and there are are protons. The mass number is and there are nucleons. There are neutrons. The charge is and there are are electrons. This radiation is called a. alpha b. beta C. gamma d. 0 е. 1 f. 2 g. 3 h. 4 i. 5 j. 6arrow_forward
- Refer to the following figure (first three rows of the periodic table) to answer the questions below. What element does not react with other elements? Group of answer choices A. hydrogen B. helium C. oxygen D. siliconarrow_forwardSmoke detectors in homes and apartments contain Am-241, which undergoes alpha decay. What is the abbreviated symbol of the "daughter nuclide" produced in the nuclear reaction? Hint: atomic number of Am is 95. A. a particle B. Pu-237 C. Am-237 D. He - 4 Е. Np-237arrow_forwardWhich of the following items are pure elements—that is, made up of only one type of atom? Check all that apply. A. Iron B. Cake C. Carbonarrow_forward
- Which of the following levels in the shell model of an atom can hold up to two electrons? A. The second shell B. The first shell C. The third shellarrow_forwardAtoms are incredibly tiny, so small that most microscopes can't even see them, but atoms themselves are made of even smaller particles: protons, neutrons, and electrons. Which of the following describes where protons are located in an atom? A. A shell B. The nucleus C. Both the nucleus and a shellarrow_forwardIn the periodic table, the elements are arrangedaccording to ________ .a. size c. mass numberb. charge d. atomic numberarrow_forward
- The size and shape of the atomic orbitals have many important implications for bonding and intermolecular interactions in biological systems. Select which orbital type has the largest number of angular nodes. A. P B. D C. None of the answers D. F E. Sarrow_forwardA carbon atom contains six protons and six neutrons.A. What are its atomic number and atomic weight?B. How many electrons does it have?C. How many additional electrons must it add to fill its outermost shell? How does this affect carbon’s chemical behavior?D. Carbon with an atomic weight of 14 is radioactive. How does it differ in structure from nonradioactive carbon? How does this difference affect its chemical behavior?arrow_forwardThe property that distinguishes an atom of one element (carbon, for example) from an atom of another element(oxygen, for example) isa. the number of electrons.b. the number of protons.c. the number of neutrons.d. the combined number of protons and neutrons.arrow_forward
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