BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 2, Problem 5U
Which of the following is NOT a property of the elements most commonly found in living organisms?
a. The elements have a low atomic mass.
b. The elements have an atomic number less than 21.
c. The elements possess eight electrons in their outer energy level.
d. The elements are lacking one or more electrons from their outer energy level.
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Which 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 energy
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.
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. silicon
Chapter 2 Solutions
BIOLOGY
Ch. 2.1 - Define an element based on its composition.Ch. 2.1 - Describe the relationship between atomic structure...Ch. 2.1 - Explain where electrons are found in an atom.Ch. 2.2 - Relate atomic structure to the periodic table of...Ch. 2.2 - Prob. 2LOCh. 2.3 - Prob. 1LOCh. 2.3 - Prob. 2LOCh. 2.3 - Prob. 3LOCh. 2.4 - Relate how the structure of water leads to...Ch. 2.4 - Prob. 2LO
Ch. 2.5 - Prob. 1LOCh. 2.5 - Prob. 2LOCh. 2.5 - Prob. 3LOCh. 2.6 - Prob. 1LOCh. 2.6 - Prob. 2LOCh. 2 - Data analysis If we call each step on the x-axis...Ch. 2 - The property that distinguishes an atom of one...Ch. 2 - If an atom has one valence electronthat is. a...Ch. 2 - An atom with a net positive charge must have more...Ch. 2 - The isotopes carbon-12 and carbon-14 differ in a....Ch. 2 - Which of the following is NOT a property of the...Ch. 2 - Ionic bonds arise from a. shared valence...Ch. 2 - A solution with a high concentration of hydrogen...Ch. 2 - Using the periodic table on page 22, which of the...Ch. 2 - Refer to the element pictured. How many covalent...Ch. 2 - Prob. 3ACh. 2 - Prob. 4ACh. 2 - If you shake a bottle of oil and vinegar then let...Ch. 2 - The decay of radioactive isotopes involves changes...Ch. 2 - Prob. 1SCh. 2 - A popular theme in science fiction literature has...Ch. 2 - Prob. 3S
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- The nucleus of an atom contains: a. neutrons and electrons b. protons and electrons c. protons only d. neutrons and protons e. neutrons onlyarrow_forwardIsotopes differ from each other only in the number of electrons they contain. Select one: a. True b. Falsearrow_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_forward
- Atoms 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_forwardWhich of the following statements is not true?a. Water is polar.b. Water stabilizes temperature.c. Water is essential for life.d. Water is the most abundant atom in Earth’s atmosphere.arrow_forwardWhich of the following statements about chemicalbonds is true?a. Covalent bonds are stronger than ionic bonds.b. Hydrogen bonds occur between two atoms ofhydrogen.c. Bonding readily occurs between nonpolar andpolar molecules.d. A molecule of water is unlikely to bond with anion.arrow_forward
- What is a proton? A. A negatively charged particle B. A positively charged particle C. An element on the periodic table D. Any particle found in the nucleusarrow_forwardThe 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 not true? a. Water is polar. b. Water stabilizes temperature. c. Water is essential for life. d. Water is the most abundant molecule in the Earth’s atmosphere.arrow_forward
- Which of the following is a representation of a covalently bonded molecule that shows the relative size and position of atoms in three dimensions? A. Structural model B. Structural formula C. Shell model D. Chemical formulaarrow_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_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
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