Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 2, Problem 4TYK
Summary Introduction
Introduction: The smallest unit of a matter that has the properties of a chemical element is called an atom. Protons, neutrons, and electrons are the subatomic particles in atom. Neutrons are subatomic particles that have a no electric charge. Electrons have negative and protons have positive charge.
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Which of the following statements are correct? Explain your answers.A. An atomic nucleus contains protons and neutrons.B. An atom has more electrons than protons.C. The nucleus is surrounded by a double membrane.D. All atoms of the same element have the same number of neutrons.E. The number of neutrons determines whether the nucleus of an atom is stable or radioactive.F. Both fatty acids and polysaccharides can be important energy stores in the cell.G. Hydrogen bonds are weak and can be broken by thermal energy, yet they contribute significantly to the specificity of interactions between macromolecules.
Which of the following statements are correct? Explain your
answers.
A. An atomic nucleus contains protons and neutrons.
B. An atom has more electrons than protons.
C. The nucleus is surrounded by a double membrane.
D. All atoms of the same element have the same number of
neutrons.
E. The number of neutrons determines whether the nucleus of
an atom is stable or radioactive.
F. Both fatty acids and polysaccharides can be important
energy stores in the cell.
G. Hydrogen bonds are weak and can be broken by thermal
energy, yet they contribute significantly to the specificity of
interactions between macromolecules.
A 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?
Chapter 2 Solutions
Study Guide for Campbell Biology
Ch. 2 - Fill in the names beside the symbols of the...Ch. 2 - The difference between the mass number and the...Ch. 2 - To move to a shell farther from the nucleus, an...Ch. 2 - Prob. 4IQCh. 2 - Fill in the blanks in the following concept map to...Ch. 2 - Prob. 6IQCh. 2 - Prob. 7IQCh. 2 - Prob. 8IQCh. 2 - Draw the structural formula of a water molecule,...Ch. 2 - Look at your sketch of a water molecule in...
Ch. 2 - Prob. 11IQCh. 2 - Prob. 1SYKCh. 2 - Atoms can have various numbers associated with...Ch. 2 - Prob. 3SYKCh. 2 - Prob. 1TYKCh. 2 - Prob. 2TYKCh. 2 - Prob. 3TYKCh. 2 - Prob. 4TYKCh. 2 - Radioactive isotopes can be used in studies of...Ch. 2 - Prob. 6TYKCh. 2 - Prob. 7TYKCh. 2 - Prob. 8TYKCh. 2 - Prob. 9TYKCh. 2 - Prob. 10TYKCh. 2 - Prob. 11TYKCh. 2 - Prob. 12TYKCh. 2 - Prob. 13TYKCh. 2 - Prob. 14TYKCh. 2 - Prob. 15TYKCh. 2 - A covalent bond between two atoms is likely to be...Ch. 2 - Prob. 17TYKCh. 2 - Prob. 18TYKCh. 2 - For questions 19-21, choose from the following...Ch. 2 - Prob. 20TYKCh. 2 - Prob. 21TYKCh. 2 - Prob. 22TYKCh. 2 - Prob. 23TYKCh. 2 - Prob. 24TYKCh. 2 - Prob. 25TYKCh. 2 - What is the difference between a molecule and a...Ch. 2 - Prob. 27TYKCh. 2 - Prob. 28TYK
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- 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 protonsarrow_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_forwardThe 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.arrow_forward
- Atoms A and B interact to form a compound, AB2. When measured, atom A has a partial negative charge and atom B has a partial positive charge. From this information, we can conclude what? Select only ONE answer choice. Note: - means "approximately equal to" , A > B means "A is greater than B" , and A B: AB2 is hydrophilic Not enough information to answer the questionarrow_forward(a) A homogeneous mixture which contains water as a solvent is called (b) Ni(CIO4)2-6H2O is hydrated whereas Ni(CIO.)e is (c) NaCl contains an bond whereas O2(g) contains a bond (d) A homogeneous mixture has a and composition (e) Temperature is an because it does not depend on the amount of substance (f) The maximum number of electrons that an orbital can have is (9) The energy of the lowest level in the H atom is (h) Arrange the following subshells in the H atom in order of increasing energy: 3s 4d 2р 4f 3d 2s 3p () Wavelength and frequency of radiation have an relationshiparrow_forwardOxygen has 8 protons, 8 neutrons, and 8 electrons. What is its atomic mass?(a) 8 (b) 16 (c) 24 (d) 32.arrow_forward
- Study figure 3.18 in the textbook. See if you can understand why some R groups are nonpolar, some polar, and others electrically charged (acidic or basic). If you were given an R group, could you place it in the correct group? Work on the R groups until you can see common elements in each category.arrow_forwardArrange the elements Na, Si, and S in the order of(a) decreasing atomic radius.(h)increasing first ionization energy.arrow_forward.Which of the following substances would be considered basic? A. hydrochloric acid (pH 1.0) B. milk (pH 6.6) C. baking soda (pH 8.1) D. water (pH 7.0) E. Dr. Pepper (pH 3.0)arrow_forward
- Which of the following levels in the shell model of an atom can hold up to two electrons? A. The second shell B. The first shell C. The third shellarrow_forwardLook up the valence electron configuration, covalent atomic radius, effective nuclear charge, first ionization energy and Pauling electronegativity in Chapter 8 (tables are attached). Examine the above data and answer the following questions. a) Explain why some of the elements like TI and Pb on the lower left of the p block are metallic. b) Explain why some of the elements like C, Si in the center of the p block form covalent bonds. Explain why these bonds formed by the network of these elements (as studied in Chapter 25) tend to be unreactive. c) Explain why the noble Group 8A elements are highly unreactive gases. d) Explain why some elements like F, CI, Br etc, on the upper right of the p block are highly reactive nonmetals.arrow_forwardAccording to chemist John Dalton, if one mole of nitrogen is combined with three moles of hydrogen to form one mole of ammonia (knowing that nitrogen, with an atomic number of 7, has an atomic mass of 14, and hydrogen, with an atomic number of 1, has an atomic mass of 1), then this compound will have an atomic weight (or molecular mass) of: 14 grams per mole (14 daltons) 17 grams per mole (17 daltons) 20 grams per mole (20 daltons) 22 grams per mole (22 daltons) 43 grams per mole (43 daltons)arrow_forward
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