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32 Cards in this Set
- Front
- Back
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A substance made up of only one kind of atom.
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Element
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The smallest unit of an element that has all the properties of that element
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Atom
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Each element has a ______ number which is the number of protons in one atom of that element.
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atomic
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Most matter cont ains only a few kinds of
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elements
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A hamburger, gasoline, and paper are all made up of only three elements
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carbon,hydrogen, oxegyn
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Two or more atoms linked together
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Molecule
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One fourth of the elements are ______ .
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Metals
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Metals except _______ are ______ at room tempature.
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mercury, SOlid
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Most metals can be hammered or rolled in to sheets.
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Malleable
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Most metals that can be formed in to wires
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Ductile
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the electrons fathest from the nuclues of a metal atom are free to move to other metal atoms this allows for the transfer of electricity
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Conduct Electricity
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electrons in other items such as plastic don't conduct electricity there are
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insulators
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Metal gets hotter than plastic
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Conduct heat
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A mixture of two metals or a mixture of metals with another element
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alloy
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Bronzeis an alloy of
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copper and tin
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Steel is an alloy of
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iron and carbon
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Brass is an alloy of
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copper and zinc
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Elements are arrranged in the periodic table n order of
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atomic number
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Elements with similar propereties are in the same
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column
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Elements in a column are part of a
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group
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The arrangement of the electrons givce the element their
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chemical properties
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All elements on the left side are metals except hydrogen while all elements on the far right are
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nonmetals
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A change of ______ seperate smetals and nonmetals
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color
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Have properties of metals and nonmetals.
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Metalloids
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Each element abrevvation is cahlled a
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chemical symbol
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The are places for new elemnets to be added but most new metals are
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artifical
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A substance made of atomso f two or more elements
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Compound
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In ______ most elements are joined together in compounds
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nature
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Shows which elemnets and how many atoms are in a compound
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Chemiacal Formula
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The number next to the compound is there because
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to shows that how many atoms of that element are in that molecule
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H2O means there are ___ hydrogen and ___ oxegyn
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2,1
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NaCi
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Na mean 1 sodium and Ci chloride= Salt
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