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Mod 5 Vocab

Across
A horizontal row of elements; Same number of energy levels
Cannot conduct electricity well
Smallest unit of a substance that keeps all the properties of that substance
Russian chemist who discovered a pattern for the elements in 1869
(Covalent) compounds that contain carbon (All living things that contain C)
Group 2 elements; all have 2 valence electrons and are very reactive
Consists of 118 elements on me
Elements from group 18; all have 8 valence electrons and and not reactive
Shiny, malleable, can conduct electricity good
Down
Has properties of nonmetals and metals
Group one elements; all have 1 valence electron and are extremely reactive
A vertical column where all elements have the same number of valence electrons
Represents a molecule using symbols and numbers
(Covalent) compounds that do not contain C as a primary substance (Was never a living thing)
Made of 2 or more chemically bonded elements
Elements from group 17; all have 7 valence electrons and are extremely reactive with alkali metals