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23 Cards in this Set
- Front
- Back
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Hannah |
Comer |
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Actinide |
An element in the second row of the rare earth elements in the periodic table. |
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Alkali Metal |
An element in group 1 of the periodic table |
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Atom |
The basic building block of most of the matter around us; the smallest particle of an element . |
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Atomic Numbers |
The numbers of protons in the nucleus of an atom. |
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Atomic Mass |
A measure of an atoms mass that is equal to the number of protons and neurons in in the atoms nucleus. |
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Compound |
a pure substance that forms when 2 or more elements join chemically. |
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Electron |
negatively charged that is located outside the nucleus of an atom. |
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Element |
one of the basic substances that combine to form all other substances . A substance that cannot be broken down into simpler substances. |
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Group |
A vertical column in the periodic table ; also called a chemical family. |
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Halogen Family |
elements in group 17 in the periodic table. |
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Lanthanide |
An element that is in the first row of rare elements in the periodic table. |
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Matter |
Takes up space |
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metal |
An element that conducts heat and electricity well. |
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Metalloid |
An element that has some properties of metal and nonmetals. |
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Neutron |
A particle with no charge found in the nucleus of an atom. |
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Nobel Gases |
An element in group 18 of the periodic table. |
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Nonmetals |
An element that does not conduct heat or electricity well and is dull and brittle or gaseous. |
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Nucleus |
The center of an atom; controls i a large structure in a cell that controls functions. |
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Period |
A horizontal row of in the periodic table. |
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Periodic Table |
A chart that organizes information about elements according to their properties. |
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Proton |
A positively charged particle that is in the nucleus of an atom |
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Transition Metals |
An element in groups three through twelve in the periodic table. |
