Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 2, Problem 3TYU
Summary Introduction
Introduction: The elements present in the nature normally occur as a mixture of isotopes. Isotopes vary in the number of neutrons and thereby affect the mass number. Stable isotopes and unstable isotopes are the two types of isotopes. The atoms of the isotopes that have the stable nuclei are called the stable isotope. The atoms of the isotopes that have the unstable nuclei are called the unstable isotope.
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11H and 13H have (a) different chemical properties because they have different atomic numbers (b) the same chemical properties because they have the same number of valence electrons (c) different chemical properties because they differ in their number of protons and electrons (d) the samechemical properties because they have the same atomic mass (e) the same chemical properties because they have the same number of protons, electrons, and neutrons
1.1. An atom of element X has an atomic number of 14 and a mass number of 30. Which of the following statements is correct? (A) An atom of sodium has 14 protons, 14 electrons, and 14 neutrons.(B) An atom of sodium has 14 protons, 16 electrons, and 14 neutrons(C) An atom of sodium has 14 protons, 14 electrons, and 16 neutrons.(D) An atom of sodium has 14 protons, 16 electrons, and 16 neutrons.1.2. The ability of carbon to form four covalent bonds with a variety of atoms is(A) Isomerism(B) Tetravalence(C) Hydrolysis(D) Quadravalence1.3. Water resists changing its temperature because of its … (A) High heat of vaporization(B) Low specific heat(C) High specific heat(D) Low heat of vaporization1.4. A solution where [H+] < [OH−] is more:(A) Acidic(B) Basic(C) Neutral(D) None of the above1.5. Malnourishment results when there is(A) A diet that does not provide enough fatty acids(B) A diet with short-term absence of one or more essential nutrients(C) A diet that does not provide enough…
The 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 protons
Chapter 2 Solutions
Biology (MindTap Course List)
Ch. 2.1 - Prob. 1LOCh. 2.1 - Compare the physical properties (mass and charge)...Ch. 2.1 - Prob. 3LOCh. 2.1 - Prob. 1CCh. 2.1 - What is a radioisotope? What are some ways...Ch. 2.1 - Prob. 3CCh. 2.2 - Prob. 4LOCh. 2.2 - Prob. 5LOCh. 2.2 - Prob. 6LOCh. 2.2 - What enables a radioisotope to substitute for an...
Ch. 2.2 - Which kind of chemical formula provides the most...Ch. 2.2 - Prob. 3CCh. 2.3 - Distinguish among covalent bonds, ionic bonds,...Ch. 2.3 - Prob. 1CCh. 2.3 - Prob. 2CCh. 2.3 - Prob. 3CCh. 2.3 - Prob. 4CCh. 2.4 - Prob. 8LOCh. 2.4 - In what form is energy transferred in a redox...Ch. 2.5 - Explain how hydrogen bonds between adjacent water...Ch. 2.5 - Prob. 1CCh. 2.5 - What are some properties of water that result from...Ch. 2.5 - How can weak forces, such as hydrogen bonds, have...Ch. 2.6 - Contrast acids and bases, and discuss their...Ch. 2.6 - Convert the hydrogen ion concentration (moles per...Ch. 2.6 - Describe the composition of a salt and explain the...Ch. 2.6 - Prob. 1CCh. 2.6 - Prob. 2CCh. 2.6 - Prob. 3CCh. 2.6 - Prob. 4CCh. 2 - Test Your Understanding Know and Comprehend 1....Ch. 2 - Prob. 2TYUCh. 2 - Prob. 3TYUCh. 2 - Test Your Understanding Know and Comprehend 4. 11H...Ch. 2 - Test Your Understanding Know and Comprehend 5. The...Ch. 2 - Test Your Understanding Know and Comprehend 6....Ch. 2 - Test Your Understanding Know and Comprehend 7. In...Ch. 2 - Test Your Understanding Know and Comprehend 8....Ch. 2 - Prob. 9TYUCh. 2 - Prob. 10TYUCh. 2 - Test Your Understanding Know and Comprehend 11....Ch. 2 - Prob. 12TYUCh. 2 - Prob. 13TYUCh. 2 - Test Your Understanding Apply and Analyze 14....Ch. 2 - Prob. 15TYUCh. 2 - Prob. 16TYUCh. 2 - Test Your Understanding Evaluate and Synthesize...
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- Test Your Understanding Know and Comprehend 4. 11H and 13H have (a) different chemical properties because they have different atomic numbers (b) the same chemical properties because they have the same number of valence electrons (c) different chemical properties because they differ in their number of protons and electrons (d) the same chemical properties because they have the same atomic mass (e) the same chemical properties because they have the same number of protons, electrons, and neutronsarrow_forwardVisit this website (http://openstaxcollege.org/l/ptable) to view the periodic table. In the periodic table of the elements, elements in a single column have the same number of electrons that can participate in a chemical reaction. These electrons are known as valence electrons. For example, the elements in the first column all have a single valence electron—an electron that can be donated in a chemical reaction with another atom. What is the meaning of a mass number shown in parentheses?arrow_forwardPotassium has an atomic number of 19. What is its electron configuration? shells 1 and 2 are full, and shell 3 has nine electrons shells 1, 2 and 3 are full and shell 4 has three electrons shells 1, 2 and 3 are full and shell 4 has one electron shells 1, 2 and 3 are full and no other electrons are presentarrow_forward
- Figure 2.7 An atom may give, take, or share electrons with another atom to achieve a full valence shell, the most stable electron configuration. Looking at this figure, how many electrons do elements in group 1 need to lose in order to achieve a stable electron configuration? How many electrons do elements in groups 14 and 17 need to gain to achieve a stable configuration?arrow_forwardPolonium is a rare element with 33 radioisotopes. The most common one, 210Po, has 82 protons and 128 neutrons. When 210Po decays, it emits an alpha particle, which is a helium nucleus (2 protons and 2 neutrons). 210Po decay is tricky to detect because alpha particles do not carry very much energy compared to other forms of radiation. They can be stopped by, for example, a sheet of paper or a few inches of air. This property is one reason why authorities failed to discover toxic amounts of 210Po in the body of former KGB agent Alexander Litvinenko until after he died suddenly and mysteriously in 2006. What element does an atom of 210Po decay into after it emits an alpha particle?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_forward
- Organic compounds are present in all living cells. They allshare the following characteristic:(a) Are used in protein synthesis(b) Are biological catalysts(c) Are composed of carbon atom backbone surrounded bychloride atoms(d) Are hydrophobic(e) Are composed of carbon atom backbone surrounded byhydrogen atomsarrow_forward41 The model below represents a molecule of ammonia gas. Model of a Molecule of Ammonia Gas Key Nitrogen atom Hydrogen atom Ammonia gas would be classified as (1) a compound (2) a mixture (3) an element (4) an atomarrow_forwardNitrogen’s atomic number is 7. Just from the atomic number, can you determine how many protons, neutrons, and electrons a nitrogen atom has and how many electrons are in its first and second electron shells? (Assume the atom is electrically neutral.)arrow_forward
- The distribution of electrons across the shells of sulphur (atomic number = 16) is as follows (number of shells indicated with Roman numbers: number of electrons shown with Arabic numbers) 1-8, 11-8 1-2; 11 -4: III - 4 (1-4; || - 4; ||| - 8 () 1-2; 11 - 6; III - 8 (1-2; 11 - 8; II - 6arrow_forwardAlchemists were medieval scholars and philosophers who were the forerunners of modern-day chemists. Many spent their lives trying to transform lead (atomic number 82) into gold (atomic number 79). Explain why they never succeeded.arrow_forwardWhich of the following elements is mismatched with its properties or function? (a) carbon—forms the backbone of organic compounds (b) nitrogen—component of proteins (c) hydrogen—very electronegative (d) oxygen—can participate in hydrogen bonding (e) all of the above are correctly matchedarrow_forward
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