Post on 16-Dec-2015
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Isotopes IonsPeriodic
Table
Periodic Law Prot.Neut.
And Elect.
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100Two atoms that are identical except for the number of neutrons is called?
What is an isotope?
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200What is the difference between C-12 and C-14?
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C-12 has 6 protons and 6 neutrons
C-14 has 6 protons and 8 neutrons
300 Are atoms a and b isotopes?
Atom a = 3 p, 3 e, 3 n
Atom b = 3 p, 4 e, 3 n
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No they have the same number of protons and neutrons, they differ in the # of electrons so they are ions
400 Which two atoms are isotopes?
A = 8 p, 8 n, 8 e
B = 7 p, 7 n, 8 e
C = 8 p, 8n, 7 e
D = 8 p, 9n, 8 e
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A & C because they have the same # protons and electrons, but a diff. # neutrons
100 An atom that becomes charged from gaining or losing electrons is called __________?
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What is an ion?
200 An atom that loses an electron is positive or negative and is called what
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What is (positive) and (cation)?
300If you have 3 p, 4 n, 3 e; what is the overall charge of the atom? Is it an anion, cation, or neither?
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It has +3 protons and -3 electrons so the overall charge is zero and it is neither a cation or an anion
400 Which example will give a negative anion charge?
A = 2 p, 2 n, 3 e
B = 2 p 3 n, 2 e
C = 2 p, 1n, 1 e
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A. Because +2p and -3e = -1
100 This group is the most reactive metals on the periodic table and found in group 1
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What is alkali metals?
200These elements are the least reactive on the periodic table and found in group 18
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What are noble gases?
300 What is the name for the elements in yellow, green, and blue?
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What are metals, metalloids, non metals?
400 Fluorine, chlorine and bromine are found in what group?
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halogens
100Why is the periodic table called “periodic”?
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Because it has repeating patterns that exist over and over again
200Atoms on the periodic table are arranged according to what?
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What is the atomic number?
300Which elements are more similar?
Li and F OR Li and Be?
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All three elements are found in the same period and the properties vary in a period, but Li and Be are closer than Li and F therefore (Li and Be) are more similar
400 Would Ar and Xe share similar properties?
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Yes, because they are in the same group or family (vertical column) and groups/families share similar properties
100 What does the atomic mass = ?
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Protons + neutrons
200 What does the atomic # =?
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The # of protons and electrons
300 If an atom has 18 protons and an atomic mass of 48,
how many neutrons are there?
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48 – 18 = 20 neutrons
If an atom has 11 electrons and 13 neutrons what is the atomic # and atomic mass?
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Atomic # = 13
Atomic mass = 13+11 = 24