ELEMENTS!

Elements

• The “building blocks” of all matter• Cannot be broken down into simpler

substances• 118 known elements (92 natural, 26 artificial)• Elements are organized on the Periodic

Table by their number of protons.

EXAMPLES(Draw 3) Helium (He)

Neon (Ne)

Gold (Au)

MORE EXAMPLES

https://www.youtube.com/watch?v=aPq3SEteEJc

https://www.youtube.com/watch?v=d0zION8xjbM

A beginning guide to help you get started.

On the periodic table…

• Rows are called “periods”• Columns are called “groups”

Find and lightly circle the elements in the following

positions on your periodic table:

• Period 1, Group 1 • Period 2, Group 14• Period 3, Group 1• Period 2, Group 16• Period 3, Group 17• Period 4, Group 8• Period 2, Group 15

Hydrogen (H)

Carbon (C)

Sodium (Na)

Oxygen (O)

Chlorine (Cl)

Iron (Fe)

Nitrogen (N)

On the periodic table…

• Rows are called “periods”• Columns are called “groups”• Elements that are close together tend to

share similar characteristics.• Each element is represented by a box.

1

HHydrogen

1.00794

Each element appears this way on the periodic table.

Each element has four parts on the Periodic Table.

1

HHydrogen

1.00794

The four parts of the periodic table are:

Atomic Number

Chemical Symbol

Element NameAtomic Mass

(Weight)

What is the Chemical Symbol for Carbon?

Quick Quiz

What is the Chemical Symbol for Iron?

What is the Chemical Symbol for Chlorine?

What is the Chemical Symbol for Nitrogen?

What is the Chemical Symbol for Gold?

What is the Chemical Symbol for Carbon?

Quick Quiz

What is the Chemical Symbol for Iron?

What is the Chemical Symbol for Chlorine?

What is the Chemical Symbol for Nitrogen?

What is the Chemical Symbol for Gold?

C

Au

N

Cl

Fe

What is the Atomic Number for Carbon (C)?

Quick Quiz

What is the Atomic Number for Iron (Fe)?

What is the Atomic Number for Chlorine (Cl)?

What is the Atomic Number for Nitrogen (N)?

What is the Atomic Number for Gold (Au)?

What is the Atomic Number for Carbon (C)?

Quick Quiz

What is the Atomic Number for Iron (Fe)?

What is the Atomic Number for Chlorine (Cl)?

What is the Atomic Number for Nitrogen (N)?

What is the Atomic Number for Gold (Au)?

6

79

7

17

26

Atomic Number

1

HHydrogen

1.00794

The Atomic Number equals the number of protons in one atom of that element.

Hydrogen has

1 proton

Atomic Number

6

CCarbon

12.011

The Atomic Number equals the number of protons in one atom of that element.

Carbon has

6 Protons

How many protons does Oxygen have?

Quick Quiz

How many protons does Chlorine have?

How many protons does Sodium have?

How many protons does Nitrogen have?

How many protons does Gold have?

How many protons does Oxygen have?

Quick Quiz

How many protons does Chlorine have?

How many protons does Sodium have?

How many protons does Nitrogen have?

How many protons does Gold have?

8

79

7

11

17