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21 Cards in this Set
- Front
- Back
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What is the weighted-average mass of the mixture of the isotopes of an element? |
Average atomic mass |
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Being _______ means that it can be stretched into wires |
Ductile |
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Having __________ means that the element is a good conductor |
Conductivity |
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What are found in Group 1 and have a single valance electron? |
Alkali Metals |
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If something is what, is it not reactive? |
Inert |
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What in an element is equal to the number of protons found in the element? |
Atomic Number |
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What are the elements that can form ionic and covalent bonds with other elements and can have properties of metals and nonmetals? |
Metalloids |
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What consists of two atoms of the same element in a covalent bond? |
Diatomic molecule |
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The _____ of elements are horizontal rows on the periodic table and each represents a higher electron energy level |
Period |
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What is any substance made up of only one type of atom called? |
Element |
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What are found in Group 17 and have seven valance electrons? |
Halogens |
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A _______/_____ of elements are vertical columns on the periodic table that have the same properties? |
Group/family |
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What are elements that do not form compounds in nature because of their 8 valance electrons? |
Noble Gases |
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What is a good conductor of heat and electricity and is usually solid at room temperature? |
Metal |
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What is an element that can conduct electricity under certain conditions? |
Semiconductor |
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What is an arrangement of elements based on increasing atomic number and changes in physical and chemical properties? |
Periodic Table |
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What are found in Group 2 and have two valence electrons? |
Alkaline earth metals |
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What are found in Groups 3-12 and have varying valence electrons? |
Transition metals |
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What are elements that are gases or brittle solids and room temperature and are poor conductors of heat and electricity? |
Nonmetals |
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Having _____ means the elect is shiny |
Luster |
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Being what means that's something can be hammered or rolled into sheets? |
Malleable |
