Introduction to Chemical Formulas - Chemistry

Metal

What is the yellow part?

Metalloids

What is the blue part?

Non-metals

What is the red part?

Nonmetal elements

Located to the right of the stair, including the two separate rows at the bottom of the periodic table

metal elements

located to the left of the stair

Metalloid elements

located along the stair-step line

Subscript

tells us the number of atoms in a compound, placed at the bottom right corner of them.

Parentheses

placed around a group of atoms to tell us the number of the atom in the group. Ex: Al(SO₄)₃

polyatomic ion

Atom groups originated from charged compound

1

How many Nitrogen are in this?

7

How many Hydrogen are in this?

2

How many Carbon is in this?

2

How many Oxygen is in this?

12

How many atoms are in this?

Covalent

Is this Covalent or Ionic?

3

How many Barium is in this?

6

How many Chlorine is in this?

9

How many atoms are in this?

Ionic

Is this Ionic or Covalent?