Atoms and Subatomic Particles

Subatomic Particles

Sharp Middle School Science

Open Ended

Do Now -

What do you remember about atoms from last class? ( 3 min )

Objectives

• Describe the subatomic particles

• Distinguish between the three subatomic particles.

Review

• All matter is composed of atoms.

• Atoms are extremely small.

Subatomic Particles

• Atoms are made of super small particles called subatomic particles.

• Subatomic literally means smaller than an atom.

Subatomic Particles

• 3 Types

• Protons

• Electrons

• Neutrons

Subatomic Particles

• Atoms are made of the subatomic particles.

• Protons and neutrons are in the center of the atom. The center of the atom is called the nucleus.

• Electrons move around the outside layer of the atom. This area is called the electron cloud

Protons

• Protons are in the center of the atom.

• Protons have a positive (+) charge (think of a magnet).

Neutrons

• Neutrons have a neutral (zero) charge.

• Neutrons are located in the center of the atom.

Electrons

• Electrons are located on the outside of the atom.

• This area is referred to as the electron cloud or as orbits.

• The electrons have a negative charge and move around the nucleus.

Multiple Choice

How many subatomic particles are there?

• 1

• 2

• 3

• 4

Multiple Choice

Which subatomic particle has a positive charge?

• Electron

• Proton

• Neutron

Multiple Choice

What two particles make up the nucleus of an atom?

• Proton & Electron

• Electron & Neutron

• Proton and Neutron

• Proton Neutron and Electron