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Sarah's Vocab

Sarah Ferguson

South West Vocabulary

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2.an ion with a positive chage
4.the properties of elements tend to repeat in a regular pattern when elements are arranged in order of increasing atomic number
6.a horizontal row of elements in the periodic table
8.the elemnts that are usually poor conductors of heat and electricity
11.the smallest particle that has the properties of an element
12.the elements thta are good conductors of heat and electricity
13.a quantity equal to one-twelfth the mass of a carbon-12 atom
16.an atom or a group of atoms that has lost or gained one or more electrons and therefore has a net electric charge
18.the center of an atom; made up of protons and neutrons
20.another name for group
21.a vertical column of elements in the periodic table
22.any atoms having the same number of protons but a different number of neutrons
1.a positively charged subatomic particle in the nucleus of an atom
3.the weighted average of the masses of all naturally occuring isotopes of an elementmetal
5.the number of protons in the nucleus of an atom
7.a negatively charged subatomic particle found in the energy level of an atom
9.the total number of protons and neutrons in the nucleus of an atom
10.an element that has properties of both a metal and nonmetal
14.symbol for atomic mass unit
15.a neutral subatomic particle in the nucleus of an atom
17.an ion with a negative charge
19.another name for period

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