Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 2, Problem 2MC
Summary Introduction
Introduction:
Mass is an important factor even at the atomic level, as the subatomic particles also possess some mass. Mass of both proton and neutron is considered as 1 mu (mass unit), while the mass of an electron is much less than that of proton and is almost negligible. Two atoms can have the same mass number but cannot have the same atomic number.
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The atomic mass of an element can be used to determine
A) the chemical properties of the element
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C) the number of neutrons in the element
D) the number of protons plus neutrons in the element
E) both the number of protons and the chemical properties of the element
The atomic number gives thea. number of neutrons in the nucleus.b. number of protons in the nucleus.c. weight of the atom.d. number of protons in the valence shell.
What is an alloy?
A. A compound of two metals
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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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