key terms

Question 1

atom definition
(example)

Answer 1

The smallest constituent unit of ordinary mater that has the properties of a chemical element.
(hydrogen)

Question 2

Element definition
(example)

Answer 2

A substance that only has 1 type of atom.
(carbon)

Question 3

molecule definition
(example)

Answer 3

2 or more atoms chemically bonded.
( NaCl)

Question 4

compound definition
(example)

Answer 4

A molecule which has 2 or more different elements.
(H20)