Composition of Molecules

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12 Terms

1

pure substance

matter made of only one type of particle

2

element

pure substance made of only one type of atom

3

compound

pure substance made of two or more elements that are chemically combined

4

atom

a single particle of a single element

5

molecule

a single particle made of two or more atoms chemically bonded together

6

chemical symbol

one or two letters that represent an element

7

noble gas

element in Group 18 that will not bond to other atoms

8

diatomic

type of element found as pairs of identical atoms

9

chemical bond

attraction that holds atoms together

10

chemical formula

collection of chemical symbols that identifies which elements make up a compound, and the ratio of those elements

11

crystal

extended structure of individual atoms bonded in a repeating three-dimensional pattern

12

polymer

extended structure of smaller molecules bonded in a repeating chain pattern