Unit 3 Word Scramble
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Term | Definition |
atom | the smallest particle into which an element can be divided and still be the same element |
electron | negatively charged particles |
nucleus | a small, dense center that has a positive charge and is surrounded be moving electrons |
proton | positively charged particles in the nusleus |
nuetron | uncharged particles in the nucleus |
electron cloud | the area around the nucleus in which the particles move |
atomic number | the number of protons in the nucleus of an atom |
mass number | the total number of protons and neutrons in an atoms nucleus |
periodic table | Dmitri Mendeleev's arrangement of the elements |
chemical symbol | an abbreviation for the elements name |
average atomic mass | the weighted average of the masses of all the naturally occurring isotopes of that element |
metal | elements that are shiny and conduct heat and electricity well |
nonmetal | poor conductors of heat and electricity |
metalloid | elements that have some properties of metals and some properties of nonmetals |
group | each vertical column on the periodic table |
period | each horizontal row of elements of the periodic table |
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18boller0315
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