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Definition
| The average mass of one atom of an element. |
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| the number of protons in the nucleus of an atom. |
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Definition
| This is used to measure the mass of particles in atoms. |
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Definition
| a one or two letter representation of an element |
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Definition
| a tiney, negatively charged, high energy particle that moves around the nucleus of an atom. |
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Definition
| Elements in the same vertical column of the periodic table |
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Definition
| Elements in the same vertical column in the periodic table |
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Definition
| the central core of an atom containing protons and usually neutrons |
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Definition
| Small, uncharged particles in the nucleus of an atom |
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Term
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Definition
elements in the same horizontal column of the periodic table |
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Term
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Definition
| a chart of the elements showing the repeating pattern of their properties |
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Definition
| small, positively charged particles in the nucleus of an atom |
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Definition
| the electrons farthest away from the nucleus of an atom and are involved in chemical reactions |
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Definition
| a group of elements in the second row of the rare earth elements in the periodic table |
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Definition
| an element in group 1 of the periodic table, EXTREMELY reactive |
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Definition
| an element in group 2 of the peiodic table, very reactive |
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Term
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Definition
| a mixture of two or more metals; a substance made of two or more elements that has the properties of a metal |
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Definition
| a substance through which electrons move freely, transmitting heat or electricity |
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Definition
| the gradual wearing away of a metal element due to a chemical reaction |
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Definition
| a term used to describe a material that can be pulled out into a long wire |
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Term
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Definition
| a group of elements in the first row of the rare earth elements in the periodic table |
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Term
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Definition
| a characteristic of those metals that are attracted to magnets and can be made into magnets |
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Term
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Definition
| A term used to describe material that can be hammered or rolled into shape |
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Definition
| the ease and speed with which and element or compund combines with other elements and compounds |
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Definition
| an element in groups 3 through 12 of the periodic table; difficult to tell the difference between them |
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Definition
| a molecule composed of two atoms |
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Definition
| the elements in group 17 of the periodic table |
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Definition
| an element that has the same characteristics of metals and some characteristics of nonmetals |
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Definition
| an element in group 18 of the periodic table |
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Definition
| an element that lacks most of the properties of metals |
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Definition
| an element that can conduct electricity under some circumstances |
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