Demo Lesson [Atomic Structure]

Unit 2:

Atomic

Structure

​Link to Google Powerpoint Version (ungraded):
ENG - https://docs.google.com/presentation/d/1gdaCbFFv45rzcQLdFEwu2VKcQMOUKWWkuZTVipwtdFQ/edit?usp=sharing

Warm Up

In your notes, respond to the following two questions to the

best of your ability.

You will input your answers on the next screen.

So hold onto your responses.

Q 1) What is the basic building block of all matter?
Q 2) Can you recall three examples of different
states of matter?

Fill in the Blanks

Drag and Drop

​ Can you recall at least three examples of different states of matter? ​

Placeholder

​

Placeholder

​

Placeholder

Note: If you place them in the incorrect order, I will go back and give you credit so don't worry.

Drag these tiles and drop them in the correct blank above

Solids

Liquids

Gases

Superfluid

Glass

Air

Ice

Rocks

Water

Chemicals

Today’s Learning Goal

You will be able to identify and describe the three

main parts of an atom: protons, neutrons and

electrons.

You’ve met today’s goal if you can:
1. Explain the role of protons in the atom.

2. Explain the function of neutrons within the atom.

3. Describe the behavior or electrons in an atom.

​Vocabulary Slide:

Make sure to take notes on the definitions or locations of each of the following words.
1. Atom
2. Element (preview for next lesson)
3.Nucleus
4. Electron Cloud
5. Subatomic Particles
6. Protons
7. Neutrons
8. Electrons

What is Matter?

Matter (noun): physical
substances, any material that
takes up space (volume) and
mass.

Matter (noun): a topic; a situation;
something concerning

When it comes to ‘matter’ we need to focus on
the noun that describes materials and not
conversational topics.

What’s the
Connection?

Matter describes all the physical

materials around us…

AND

…everything that is considered

Matter is made up of tiny particles

called Atoms*1

Today’s Big
Questions

What is an atom?
What is inside an atom?
How can we figure out the identity
of the atom based on what’s inside?

What is an Atom?

The smallest unit of an

element*2 that retains the
properties of that element.

Atoms have two ‘areas’: the
Nucleus*3 (center) and the

Electron Cloud*4

(surrounding space).

What is an Atom?

Multiple Choice

What are the three main components/parts of an atom?

• Protons, Neutrons and Electrons

• Protons in the nucleus

• Protons and Neutrons

• Atoms and Matter

Particles within an Atom

also called Subatomic Particles*5

Particles in the Atom

Subatomic
Particles

Charge

Mass

Location

Protons*6. _________(+) Positive

1 amu

Inside Nucleus

The number of Protons help us identify the element.

Example:

Hydrogen always has 1 Proton. ALWAYS!

Helium has 2 Protons. ALWAYS!

Carbon has 6 Protons. ALWAYS!

Each element will always have the same number of Protons!

Hotspot

Where are the protons in an atom?

Select all that apply.

Particles in the Atom

Subatomic
Particles

Charge

Mass

Location

Protons*6. _________(+) Positive

1 amu

Inside Nucleus

Neutrons*7 __________No Charge /

Neutral

1 amu

Inside Nucleus

Neutrons help the atom stabilize the nucleus,

but they cannot tell us the identity of the element without knowing

the Protons.

Multiple Choice

What is the charge of a neutron?

• Negative (-)

• Positive (+)

• Neutral (0)

Particles in the Atom

Subatomic Particles

Charge

Mass

Location

Protons*6 ___________(+) Positive

1 amu

Inside Nucleus

Neutrons*7 ___________No Charge

1 amu

Inside Nucleus

Electrons*8 ________(-) Negative

No Mass
(Close to zero)

Outside Nucleus

Electrons are responsible for:

an atom's ability to bond with other atoms.

They love moving around!

Hotspot

Where are the electrons in an atom?

Select all that apply.

The Nucleus*3

-Stores all the Protons & Neutrons

-is Positively Charged (+)

(because of the protons)

-Contains almost all of the mass in an atom

(protons and neutrons are heavier
than electrons)

Electron Cloud*4

-Where all of the Electrons are found

-Is Negatively Charged (-)

(because of the electrons)

-Holds almost all of the volume of the atom.

the Two Regions of the Atom

Open Ended

With a partner, discuss the following and input your response below:

Q1) What is the role of protons, neutrons and electrons within an atom?

Q2) My partner's name is ____

(hint: think about the role or purpose of each for your explanation)

​Exit Ticket ___(Submit your hardcopy at the end of class)

​1) Where do you believe the nucleus is in each diagram?
2) Which models best show the protons, neutrons and electrons within the atom?