BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
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Chapter 2, Problem 4U
The isotopes carbon-12 and carbon-14 differ in
a. the number of neutrons.
b. the number of protons.
c. the number of electrons.
d. Both b and c are correct.
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Isotopes differ in theira. number of protons.b. atomic number.c. number of neutrons.d. number of electrons.
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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 name given to the atomic particle found outside the nucleus of an atom isa. proton.b. neutron.c. electron.d. ion.arrow_forwardFluorine has an atomic number of 9. Which of the following is true of fluorine? O A. It will lose an electron to become a cation. B. It will gain an electron to become an anion. O C. It will form two covalent bonds to fill its outer shell. O D. It will form three covalent bonds to fill its outer shell. d. MacBooarrow_forward1. Which of the following is true of oxygen that has 8 protons, 8 neutrons, and 8 electrons? A. It has a charge of +8. B. It has a mass number of 8. C. It has an atomic number of 8. D. It has atomic number of 16. 2. Trace elements are those required by an organism in only minute quantities. Which of the following is a trace element that is required by all forms of life? A. arsenic B. iodine C. mercury D. ironarrow_forward
- Chemical reactions that take place in living systems include A. Neutralization reaction B. Condensation reaction C. Hydrolysis reaction D. All the abovearrow_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_forwardMiller and Urey created a reaction chamber that simulated conditions in Earths early atmosphere to test the hypothesis that______. a. lightning-fueled atmospheric reactions could have produced organic compounds b. meteorites contain organic compounds c. organic compounds form at hydrothermal vents d. oxygen prevents formation of organic compoundsarrow_forward
- A molecule of water is formed when one atom of oxygen is covalently bonded with two atoms of hydrogen. What is the total number of electron pairs that must be shared between the oxygen atom and the hydrogen atoms in order to complete the outer electron shell of all three atoms? a.2 b.3 c.4 d.1 e.5arrow_forwardThe atomic number of sulfur is 16, Sulfur combines with hydrogen by covalent bonding to form a compound, hydrogen sulfide. Based on the number of valence electrons in a sulfur atom, predict the molecular formula of the compound. a. HS b. HS2 c.H2S d. H3S2arrow_forwardWhich parts of an element do not vary in number?a. electronsb. neutronsc. protonsd. All of these vary.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_forwardThe four most abundant elements needed by the human body are carbon, hydrogen, oxygen, and nitrogen. Because these are needed in large amounts to support our cells, these are referred to as a. isotopes. b. bulk elements. c. buffers. d. trace elements. e. essential elements.arrow_forward
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