Chapter 4 Lesson 1

Today You Need:

4.1 Notes handout (glued in on the right side!)

Pencil or pen

3 colored pencils, pens, or highlighters

What is Matter?

Anything that has MASS and takes up SPACE

Examples of matter?

The smallest unit of matter is the ATOM

Right Side

“Atom”

From the Greek word atoma, meaning “INDIVISIBLE”.

Right Side

Think – Write -From the Greek word atoma, meaning “indivisible”.

Using this definition, predict why the atom was called the atom.

{Complete Sentences!}

Left Side

My Prediction:

Pair – Write

Share with your partner.

Write down their thoughts in a new color.

Left Side

My Prediction: My Partner’s Prediction:

“Atom”From the Greek word atoma, meaning “indivisible”.

Greek Philosopher Democritus could believed that you could only cut matter up a certain amount of times before it was too small to be divided.

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Parts of the Atom

All Atoms are mostly EMPTY SPACE surrounding a tiny NUCLEUS.

“subatomic particles” – particles that are SMALLER than an atom

There are 3 main subatomic particles.

Protons, Neutrons, Electrons

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Protons

Use your first color to highlight or shade behind the word “Protons” on your handout.

Symbol: P+

Charge: + 1

Mass ~ 1 amu

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Units

What units do we use for measuring distance?

What units do we use for measuring mass?

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Units

What units do we use for measuring distance?

Inches, centimeters, miles, kilometers, yards…

What units do we use for measuring mass?

Pounds, ounces, gramsamu: ATOMIC MASS UNIT = for measuring mass

Left Side

Right Side

Neutrons

Use your 2nd color to highlight or shade behind the word “Neutrons” on your handout.

Symbol: N

Charge: 0 (Neutrons are Neutral)

Mass ~ 1 amu

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Electrons

Use your 3rd color to highlight or shade behind the word “Electrons” on your handout.

Symbol: e-

Charge: - 1

Mass ~ 0 amu

Right Side

AMU repeat

What is amu?Atomic mass unitUse to measure mass of subatomic particles.

Right Side

Create a Chart

Create a chart that shows the symbol, charge, and mass (amu)

Left Side

Create a Chart

Create a chart that shows the symbol, charge, and mass (amu)

Left Side

Particle Symbol Charge Mass (amu)

proton P+ + 1 1

neutron N 0 1

electron e- - 1 0

Lithium Atom:3P+, 4N, 3 e-

Use your 3 colors:1 color for Protons, P+2nd color for Neutrons, N3rd color for electrons, e-

Right Side

Draw a new atom

Draw Berylium, Be

Be has 4 protons, 4 electrons, and 5 neutrons.

Don’t forget to color-code the subatomic particles.

Left Side