Lesson 3

Question 1

Atomic #

Answer 1

Number of protons in an atom

Question 2

Periods

Answer 2

7 horizontal rows of periodic table

Question 3

Vertical columns of the periodic table

Answer 3

Groups (or families)

Question 4

Atomic mass

Answer 4

The approximate total of protons and neutrons in an

atom

Question 5

Atomic mass - Atomic number =

Answer 5

Neutrons

Question 6

Isotope

Answer 6

Slight variation of neutrons in an element