Atoms are the basic units of matter that form molecules by bonding together through covalent chemical bonds. An atom consists of a positively charged nucleus surrounded by negatively charged electrons, with the nucleus composed of positively charged protons and uncharged neutrons. All matter is made up of atoms, and humans are formed of billions of different atoms though there are only about 40 main types of elements found in the human body, mostly hydrogen and oxygen.

1. The Atom
Science Week Special

2. The Atom
➲
The atom is the
basic unit of
matter.

3. The Atom
➲
➲
Atoms are the building blocks of
molecules.
You need at least two atoms linked by a
covalent chemical bond to form a
molecule.
Example: you need two atoms
Of Hydrogen and one atom of
Oxygen to form
A molecule of
water.

4. The Atom
The atom consists of a nucleus
surrounded by a cloud of electrons.
The neutrons are negatively
charged.
The nucleus is formed by protons (positively charged); and
neutrons (uncharged)

5. The Atom
Everything is made of atoms, and atoms
are formed by particles of matter.
➲
You are made of billions of atoms, but we
can find only 40 different types of atoms
(elements), mostly hydrogen and oxygen.
The End.

6. The Atom
Everything is made of atoms, and atoms
are formed by particles of matter.
➲
You are made of billions of atoms, but we
can find only 40 different types of atoms
(elements), mostly hydrogen and oxygen.
The End.