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12 Cards in this Set
- Front
- Back
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In a modern periodic table, elements are arranged in order of?
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Elements in the periodic table are arranged of increasing atomic number
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How many periods does the modern periodic table have?
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7
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An element that is shiny and conducts electricity is likely to be a?
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Gold
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Elements that have the same number of valence electrons are
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The elements that have the same number of valence electrons are located in a group
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Which of the following elements is a metalloid?
a. copper b. indium c. silicon d. carbon |
c
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What is the octet rule?
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that atoms tend to gain, lose or share electrons so as to have eight electrons in their outer electron shell
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What do all nonmetals have in common
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gain electrons, poor conductor of heat, poor conuctor of energy, brittle like solid, nonmetalic color
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Which class on the periodic table shares properties with both metals and nonmetals?
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metalloid
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Why are noble gases so unreactive
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to get a full outer shell of electrons either by gaining, loosing, or sharing electrons.
Noble gasses already have a full outer shell and so are very stable in their elemental form. |
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Who is credited with first arranging the elements the way they are now arranged on the periodic table
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Dmitri Mendeleev
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How many meters are in a hectometer
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100-metters
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How many grams are in 4 kilograms if 1 kilogram = 1000 grams
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4 kilo grams
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