What are elements?

What is an atom?

What are two types of elements?

Describe some properties of metallic elements?

Describe some properties of non-metallic elements?

How many elements are there?

How many of them are natural?

What is a periodic table?

What a single atom is referred to as?

What is a cluster of atoms called?

How many monatomic elements are there?

Name all of the monatomic elements

How atoms are com-packed in metallic lattices?

How atoms are com-packed in non-metallic lattices?