Vocab for units 7A-16A
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Gas | a state of matter where the atoms or molecules are farther apart than in a liquid and moving faster than a liquid; very little or no attraction between particles
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| liquid | a state of matter where the atoms or molecules are packed less closely than a solid, but more closely than a gas and are moving more than a solid; some attraction between the particles
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| solid | a state of matter where the atoms or molecules are packed closely together and do not move freely; strong attraction between the particles
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| molecule | smallest part of a compound with the properties of that compound; two or more atoms chemically bonded together
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| particle | atoms or molecules of a substance; compose all matter and are in constant motion
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| state of matter | commonly known as solid, liquid or gas; each has characteristic properties
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| atom | smallest part of an element with the properties of that element; the basic building blocks of all matter
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| atomic mass | the average mass of atoms of an element, it also known as atomic weight. The mass on the Periodic Table of Elements
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| column | lines that go up and down/vertically; also called "groups" on the periodic table of elements
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| row | lines that go across/horizontally; also called "periods" on the periodic table of elements
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| nonmetal | category of elements that do not have the properties of the metals
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| mass number | the total number of protons and neutrons in one atom of an element
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| atomic number | the number of protons in one atom of and element; is used to identify the element
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| electron | a negatively charged particle found outside the nucleus of an atom
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| electron cloud | the area surrounding the nucleus of an atom where electrons orbit
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| neutron | a particle, same mass as a proton, but with no electric charge; found in the nucleus of an atom
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| proton | positively charged particle, found in the nucleus of an atom; quantity is equal to the atomic number/determine the element.
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| element | a collection of atoms of one type that cannot be decomposed into any simpler units except by spontaneously changing into other units by radioactive processes.
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| Family (of elements) | a grouping of elements based on similar chemical properties; families are generally arranged by columns in the periodic table.
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| metal | category of elements that usually have a shiny surface, are generally good conductors of heat and electricity, and can be melted or fused, hammered into thin sheets or drawn into wires
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