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ATOMIC BRACELETS

BUILD YOUR OWN ATOM!

.

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What is Chemistry?

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Chemistry is the study of matter and how it changes!

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What is matter?

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Matter is anything that has mass and takes up space!

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Why are atoms so important?

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An atom is the basic building block of all matter!

Everything you see here are made of atoms!

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What makes up an atom?

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ATOMS ARE MADE OF:

ELECTRONS

PROTONS

NEUTRONS

Atoms are made of TINY PARTICLES: Protons (positive! ➕) Neutrons (neutral 😐) Electrons (negative! ➖)

�PROTONS

Where are they? In the center, called the nucleus (say: new-klee-us).�
What do they do? They have a positive charge (like a + sign!).�
How to remember: P for Proton and Positive.

ELECTRONS

Where are they? Zooming around the nucleus, like planets around the sun! They do this because they have a negative electrical charge, so they are always pulling towards the positive protons. This pull between the positive protons and negative electrons is called the electric force.�
What do they do? They have a negative charge (like a − sign!)�
How to remember: E for Electron and Electric/Negative.�

NEUTRONS

Where are they? Also in the nucleus, hanging out with the protons.�
What do they do? They have no charge — not positive or negative.�
How to remember: Neutron = Neutral.

Why do they need neutrons? Because without neutrons, the positively charged protons will push each other out of the atom! There is a stronger force that exists between the protons and neutrons, which prevents this from happening! This force is called the strong nuclear force, and it holds the nucleus together.

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Parts of an Atom

This is a Nucleus.

These are Electron Shells.

It holds the Protons and Neutrons in an atom

The Electrons orbit the Nucleus!

1st Shell	2 Electrons
2nd Shell	8 Electrons

There is a certain amount of electrons per Shell:

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This is a… PERIODIC TABLE!

The Number of Protons

decides what element it is!

If the # changes, it’s a WHOLE new element!

Each box

represents a new element!

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What do the numbers mean in each box?

We are looking at the element HYDROGEN.

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What do the numbers mean in each box?

This number is the Atomic Number

The Atomic Number is the Number of Protons in the element

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What do the numbers mean in each box?

This number is the Atomic Mass

The Atomic Mass is the total Number of Protons and Neutrons in the element

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What do the numbers mean in each box?

To solve for the Number of NEUTRONS

Subtract the ROUNDED Atomic Mass with the Atomic Number

Atomic Mass

-

Atomic Number

(Number of Protons + Number of Neutrons) - (Number of Protons) = Number of Neutrons

Number of NEUTRONS

=

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What do the numbers mean in each box?

For Example:

Hydrogen's Atomic Mass = 1.008

Hydrogen’s ROUNDED Atomic Mass = 1

Hydrogen’s Atomic Number = 1

Atomic Mass - Atomic Number

Number of NEUTRONS

=

1 - 1

0

=

Hydrogen has 0 Neutrons!

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What do the numbers mean in each box?

What about electrons?

For a Neutral Atom,

The Number of Electrons is EQUAL to the Number of Protons!

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Activity Cheat Sheet!

ATOMIC NUMBER

NUMBER OF

PROTONS

ATOMIC MASS

NUMBER OF

ELECTRONS

=

SUM OF THE NUMBER OF PROTONS + NEUTRONS

=

NUMBER OF PROTONS

=

ATOMIC NUMBER - ATOMIC MASS = Number of Neutrons

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Now it’s YOUR turn!

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INSTRUCTIONS!!

Get your own Element Card
On your Worksheet, Find the Number of Protons, Neutrons, and Electrons for your specific Element
Color Code your Beads with the Protons, Neutrons, and Electrons (With colors of your Choice)
Recreate your own Element on the worksheet!
With the help of an instructor, grab your string and create your own Atomic Bracelets!

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Examples:

Lol (add pics when we get the chanc)

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THANKS!