BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 2, Problem 1U
The property that distinguishes an atom of one element (carbon. for example) from an atom of another element (oxygen, for example) is
a. the number of electrons.
b. the number of protons.
c. the number of neutrons.
d. the combined number of protons and neutrons.
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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.
The atomic mass of an element can be used to determine
A) the chemical properties of the element
B) the number of protons in the element
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
What is an alloy?
A. A compound of two metals
B. An element of two metals
C. A mixture of two metals
D. A molecule of two metals
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_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_forwardWhich statement is false? A. Elements are found in compounds and molecules B. compounds are made of elements C. a molecule must be made of at least two atoms D. chemical bonds form between molecules of solute and solvent E. two atoms of oxygen make a molecule of oxygenarrow_forward
- 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 energyarrow_forwardWhat 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 atomic mass number of an atom is determined by the sum of the number of in the atom. (a) protons plus electrons plus neutrons (b) protons plus electrons (c) neutrons plus electrons (d) neutrons plus protonsarrow_forward
- Which 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_forwardThe atomic number of an atom is determined by the number of in the atom. (a) protons (b) neutrons (c) electrons (d) electrons plus neutrons plus protonsarrow_forwardWhat atom has only one proton? a. hydrogen c. a free radical b. an isotope d. a radioisotopearrow_forward
- Distinguish between an element, an atom, and a molecule.arrow_forwardWhich type of bond represents a weak chemical bond? a. hydrogen bond b. ionic bond c. covalent bond d. polar covalent bondarrow_forwardIf you added one more proton to an atom of iron, then what element would it become? A. Cobalt B. Ruthenium C. Manganesearrow_forward
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