Vocab from 3.1 and 3.2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| The average mass of one atom of an element. | atomic mass
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| A chart of the elements showing the repeating pattern of their properties. | periodic table
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| The central core of an atom containing protons and usually neutrons. | nucleus
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| A small, positively charged particle in the nucleus of the atom. | proton
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| A small particle in the nucleus of the atom, with no electrical charge. | neutron
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| A tiny, negatively charged particle that moves around the nucleus of an atom. | electron
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| A unit used to measure the mass of particles in atoms; a proton or neutron has a mass of 1 amu. | atomic mass unit
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| The number of protons in the nucleus of an atom. | atomic number
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| A one- or two-letter representation of an element. | chemical symbol
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| Elements in the same vertical column of the periodic table; also called family. | group
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| Elements in the same vertical column of the periodic table; also called group. | family
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| A horizontal row of elements in the periodic table. | period
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| One of the electrons farthest away from the nucleus of the atom; these electrons are involved in a chemical reaction. | valence electron
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| A term used to describe material that can be hammered and rolled into shape. | malleable
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| A term used to describe a material that can be pulled out into a wire. | ductile
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| A substance that can transmit heat or electricity easily. | conductor
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| A characteristic of those metals that are attracted to magnets and can be made into magnets. | magnetic
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| The ease and speed in which an element or compound combines with other elements and compounds. | reactivity
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| The gradual wearing away of a metal element due to a chemical reaction. | corrosion
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| A mixture of two or more metals. | alloy
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| An element in Group 1 of the periodic table | alkali metals
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| An element in Group 2 of the periodic table. | alkaline earth metals
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| An element in Group 3 through 12 of the periodic table. | transition metals
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| An element in the first row of the rare earth elements in the periodic table. | lanthanides
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| An element in the second row of the rare earth elements in the periodic table | actinides
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| An element that lacks most of the properties of metals. | nonmetal
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| A molecule composed of two atoms that are the same. | diatomic molecule
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| The elements in Group 17 of the periodic table. | halogens
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| An element in Group 18 of the periodic table. | noble gas
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| An element that has some of the characteristics of metals and some of the characteristics of nonmetals. | metalloid
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| An element that can conduct electricity under some conditions. | semiconductor
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Created by:
Mrs. Klein
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