Unit 2 Vocabulary Review

Front

atom

Back

building block of all matter; made of subatomic particles

Front

element

Back

pure substance; made of only 1 type of atom

Front

compound

Back

2 or more DIFFERENT elements chemically combined

Front

molecule

Back

2 or more SAME/DIFFERENT elements chemically combined

Front

chemical symbol

Back

1 to 2 letter notation (shorthand) that denotes (identifies) an element

Front

chemical formula

Back

2 or more chemical symbols combined that denotes a compound

Front

coefficient

Back

identifies the total number of molecules present (large # to the left)

Front

subscript

Back

identifies the total number of atoms present in an element (small # to the right)

Front

periodic table

Back

an organizational system to showcase all 118 different elements.