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24 Cards in this Set
- Front
- Back
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Christian |
Holmes |
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actiindes |
an element in the row of the rare earth elemen |
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alkali metal |
an element in group 2 of the periodic table |
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atom |
the smallest particle of an element |
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atomic mass |
the average mass of one atom of an element |
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atomic number |
the number of protons in the nucleus of an atom |
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compound |
a substance that forms when two or more combined elements |
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elctron |
a negatively charge subatomic particle that is located outside the nucleus of an atom |
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element |
that of the basic substances combine to all forms |
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group |
a vertical column in the periodic table also called a chemical family
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Halogens |
Elements in group 17 of the periodic table |
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Lanthanides
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An element in the first row of the rare earth elements of the periodic table |
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Matter |
Anything that has mass and takes up space |
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Metal |
An element that conducts heat and electricity well is shiny and can be hammered into sheets or drawn into wires |
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Metalloid |
An element that has some properties of both metals 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 |
Group 18 on the periodic table gases usually do not combine or react with other elements |
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Nonmetal |
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 containing protons and neutrons |
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Period |
A horizontal row in the periodic table |
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Periodic table |
A chart that organizes information about all know elements according to their properties |
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Proton |
Positively charged particle found in the nucleus atom |
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Transition metal |
An element which falls between groups 3 through 12 in the periodic table |
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Valance electron |
Electrons in the outer shell involved in bonding to other atoms |
