ANY THING THAT TAKES UP SPACE AND HAS MASS

THE SMALLEST UNIT OF A CHEMICAL ELEMENT

EACH ELEMENT IS MADE PUT OF ONE KIND OF ATOM THERE ARE ABOUT 120 ELEMENTS

A LIST OF ALL THE CHEMICAL ELEMENTS THAT EXIST IN THE UNIVERS(THAT HAS BEEN DISCOVERS BY HUMANS SO FAR

FORMED WHEN 2 OR MORE ATOMS JOIN TOGETHER THESE MAY BE 2 OF THE SAME OR 2 DIFFERENT ATOMS

FORMED WHEN 2 OR MORE DIFFERENT ATOMS ARE JOINED TOGETHER ALL COMPOUNDS ARE ALSO MOLECULES