STAAR Vocabulary 5

Question 0

Vertical columns on the periodic table with similar properties; also called families.

Answer 0

Groups

Question 1

An arrangement of the elements according to their atomic number.

Answer 1

Periodic table

Question 2

Each horizontal row of elements from left to right on the periodic table.

Answer 2

Periods

Question 3

A substance that cannot be broken down chemically into simper substances.

Answer 3

Element

Question 4

Electrons in the last shell or energy level of an atom.

Answer 4

Valence electrons