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a horizontal row in the periodic table |
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the number of protons in the nucleus of an atom |
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a subatomic particle that has no charge |
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an element that is shiny and conduct heat and electricity well |
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a region in an atom where there is a high probability of finding electrons |
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an element that conducts hear and electricity poorly |
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a subatomic particle that has a positive charge |
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a vertical column of elements in the periodic table |
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a subatomic particle that has a negative charge |
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the sum of the number of protons and neutrons |
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atoms that have the same number of protons, but different number of neutrons |
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the weighted average of all naturally occurring isotopes |
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an electron that is found in the outermost shell of an atom |
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the mass in grams of 1 mole of a substance |
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an element that has properties of both metals and nonmetals |
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the SI base unit used to measure the amount of a substance |
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an atom's central region which is made up of protons and neutrons |
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Who proposed the first widely accepted version of the atomic theory? |
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Who proposed a model in which electrons can only be in certain energy levels? |
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What family does neon belong to? |
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What family does sodium belong to? |
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What family does chlorine belong to? |
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What family does calcium belong to? |
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What family does gold belong to? |
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proton, neutron, electron |
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What are the 3 subatomic particles? |
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+1, 1, and in the nucleus |
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What is the charge, mass, and location of a proton? |
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What is the charge, mass, and location of a neutron? |
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-1, 1/1840, and outside nucleus |
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What is the charge, mass, and location of an electron |
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True or False. Elements in the same horizontal row, or period, have the same number of valence electrons and similar chemical properties. |
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Is carbon a metal, nonmetal or metalloid? |
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Is radon a metal, nonmetal, or metalloid? |
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Is lead a metal, nonmetal,or metalloid? |
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Is potassium a metal, nonmetal, or metalloid? |
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Is calcium a metal, nonmetal, or metalloid? |
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Is silicon a metal, nonmetal, or metalloid? |
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