Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 2SQ
If you change the number of _____ the atom becomes a different element.
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If an atom has an atomic number of 6 and an atomic mass of 14, that means it must have _____ protons.
An -OH group is a(n) _______ group.
Why the Number of Electrons Matter
Since we know each element as a defined number of protons, we can also use that number to determine the number of electrons, assuming the element has no charge. Let’s write some out:
ELEMENT
NUMBER OF PROTONS
NUMBER OF ELECTRONS
C
A
B
O
C
D
Al
E
F
Na
G
H
Si
I
J
Chapter 2 Solutions
Campbell Essential Biology (7th Edition)
Ch. 2 - An atom can be changed into an ion by adding or...Ch. 2 - If you change the number of _____ the atom becomes...Ch. 2 - A nitrogen atom has 7 protons, and the most common...Ch. 2 - Why are radioactive isotopes useful to tracers in...Ch. 2 - What is chemically nonsensical about this...Ch. 2 - Why is it unlikely that two neighboring water...Ch. 2 - Which of the following is not a chemical reaction?...Ch. 2 - Some people in your study group say they dont...Ch. 2 - Explain how the unique properties of water result...Ch. 2 - Explain why it is unlikely that life could exist...
Ch. 2 - A can of cola consists mostly of sugar dissolved...Ch. 2 - For each statement, identify which major theme is...Ch. 2 - For each statement, identify which major theme is...Ch. 2 - For each statement, identify which major theme is...Ch. 2 - Animals obtain energy through a series of chemical...Ch. 2 - Interpreting Data. As shown in Figure 2.17,...Ch. 2 - Critically evaluate this statement: Its paranoid...Ch. 2 - A major source of the CO2 that causes ocean...
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- Each carbon atom can bond with as many as _________ other atoms.arrow_forwardIf you took a sample of a particular element and found that one group had a specific number of neutrons, and another group had a different number of neutrons, those two groups are called ___ of each other. Isotopes Isomers anions cations What is the tube-like structure which allows direct access into the cytoplasm from the outside?arrow_forwardA glycosidic bond between two monosaccharides can also be classified as a(n) ________. Question 12 options: ether bond double bond triple bond ester bondarrow_forward
- Element Atomic Number Mass Number Number of Protons Number of Neutrons Number of Electrons Carbon-12 12 6 Nitrogen-14 7 7 Chlorine-35 35 17 Oxygen-16 8 Carbon-14arrow_forwardIn a base, the hydrogen ion concentration is ____ than the hydroxide ion concentration.arrow_forwardThe biggest difference between elements and molecules is that elements only have one TYPE of atom, while molecules have MULTIPLE types of atoms. O True Falsearrow_forward
- The atoms found in a carbohydrate are always found in this ratio Twice as many hydrogens as Oxygen and Carbon Twice as many carbons as oxygen and hydrogen No answer text provided. nobody knows they are too sImall to observearrow_forwardA nitrogen atom has 7 protons, and the most commonisotope of nitrogen has 7 neutrons. A radioactive isotopeof nitrogen has 8 neutrons. Write the atomic number andmass number of this radioactive nitrogen as a chemicalsymbol with a subscript and superscript.arrow_forwardA solution at pH 4 is _____ times as _______ as a solution at pH 7.arrow_forward
- For this homework question I have been having difficulty figuring out what the atomic mass is for Gi + ^2 because it has 40 electrons and the heavier isotope has 42 neutrons and has a 2 new neutronsarrow_forward“It’s paranoid and ignorant to worry about industry or agriculture contaminating the environment with their chemical wastes. After all, this stuff is just made of the same atoms that were already present in our environment anyway.”What do you think of this statement?arrow_forwardFree radicals are highly reactive molecules that often contain ________. They are reactive due to the presence of a single ________ that can cause a chain reaction of free radical formation. I need help finding the right words for the blanks. The second blank is a subatomic particle.arrow_forward
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