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14 Cards in this Set
- Front
- Back
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protons
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stable, positively charged subatomic particle in the baryon family
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element
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one of four substances, earth, air , fire , water
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atomic weight
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the average mass of an atom of an element
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isotope
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one of two or more atoms having the same atomic number but different mass numbers
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valance
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the ability of a substance to interact with another or to produce an effect
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periodic table
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a table arrangment of the elements according to their atomic numbers so that elements with similar properties are together
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reactive element
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tending to participate readily in reactions
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atom
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a unit of matter, the smallest unit of an element
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electrons
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a stable subatomic particle in the lepton family
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neutrons
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an electrically neutral subatomic particle in teh baryon family
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covalent bonding
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a chemical bond formed by the sharing of one or more electrons, especially pairs of electrons, between atoms
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inert (stable) element
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not readiliy reactive with other elements; forming few or no chemical compounds
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radioactive
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of, exhibiting or caused by radioactivity
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atomic number
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the number of protons in an atomic nucleus
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