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Test 11-28-12

Periodic table

QuestionAnswer
Positive subatomic particle of an atom Proton
Negative subatomic particle of an atom Electron
Neutral subatomic particle of an atom Neutron
Where the in electrons are found Inner orbital
Where the outer electrons are found Outer orbital
Electrons found in outer level of the orbital rings Valence electrons
Group Verticle row of the periodic table
Period Horizontal row of the periodic table
Atomic number The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
Atomic mass The mass of an atom expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom...
Element A part or aspect of something, esp. one that is essential or characteristic.
Compound a chemical species that is formed when two or more atoms join together chemically, with covalent or ionic bonds.
Mixture A substance made by mixing other substances together.
Homogeneous mixture any combination of substances that has uniform composition and properties; a mixture that is uniform throughout
Heterogeneous mixture any combination of substances that does not have uniform composition and properties; a mixture of physically distinct substances with different properties
Created by: Maria13579
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