Do Now Day 2

Let's complete the activity from our last session

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Elements

• A substances that cannot be broken down into simpler substances by chemical means.

• An element is composed of atoms that have the same atomic number, that is, each atom has the same number of protons in its nucleus.

• On the next slide, you will be shown three games. Click "Atom" and play with the particles by moving them to the rings to see what happens.

• Then you will write five things you discovered.

Atomic Number

• Every element has a unique atomic number, it indicates the number of protons in the nucleus of the atom.

• Normal atoms are neutral so it also is the number of electrons.

Atomic number

The atomic number of an element is located the top of each box in the periodic table

Play the Atom game again. This time pay attention to what happens when protons are added.

Atomic number

The atomic number of this element is 79. That means that it has 79 protons and 79 electrons.

Atomic number

Which atom has 16 protons and 16 electrons?

Ok...Back to your sheet

Element Name

Every element its own unique name. Many Element names are very old like chemical symbols many are based on other languages, chlorine is named after khloros the greek word for "greenish-yellow." New names are approved by an international committee.

Chemical Symbols

Every element abbreviated using a unique symbol of one or two letters. The first letter is always capitalized and if there is a second letter, it is lower case.

Some are based on other languages-Fe is Iron from the latin "ferrium".