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# Lana- Periodic Table of Elements

prezi about the periodic table of elements
by

## Lana Rosenthal

on 19 October 2012

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#### Transcript of Lana- Periodic Table of Elements

By Lana Rosenthal Periodic Table of Elements photo (cc) Malte Sörensen @ flickr Symbol > <Atomic number- this tells you the number of protons and the number of electrons in a neutral atom. ^ Atomic mass- weight of protons + neutrons in the nucleus. This diagram is used to show the location of the electrons. Bohr Diagram The rings on which the electrons are located are called orbitals or shells The first orbital, closest to the nucleus, can hold two electrons, the second orbital can hold eight, and the third can hold eighteen. The numbers of protons and neutrons
are written in the nucleus. The Lewis Structure is used to show the electrons in the valence, the outermost orbital. Lewis Structure Fluorine The Three subatomic particles Protons- positive charge, found in nucleus, # of protons = atomic # Electrons- negative charge, found in electron cloud, in a neutral atom, # of protons = #of electrons Neutrons- no charge, found in nucleus, atomic mass- atomic number (# of protons) = # of neutrons An element is matter made up of all the same atoms. What is an element? c c c c c
c c c c c Instructions for a Lewis Structure: 1. Place your chemical symbol in the middle of an imaginary box.
2. Pick a side to start with and draw a dot (an electron) that would be sitting on the wall of your imaginary box.
3.Move to the opposite side and draw another dot there.
4.repeat steps 2 and 3 on the remaining sides.
5. If you have more electrons, you will start to pair them up on the sides, beginning with the side that you started with. F F F F F Atomic weight of one, seems I under achieve.
At room temperature I’m a real fie starter.
My frequency everywhere makes you believe
My twin and an O, gives you water

Odorless, tasteless, it seems I’m hardly there
Unless, of course, you’re organic
The fear of a shortage may give you a scare
But chill out, I’m abundant, don’t panic

Could I be the next alterative fuel?
I’m already the king of the stars.
One day in the future, with oil I’ll duel
And move cleanly all of your cars

Do you know who I am?
I’ll give you two guesses.
But you’re only going to need one
It’s me Hydrogen, the king of all gasses
With the atomic number of one
By Alex Chancey Visit http://www.learner.org/interactives/periodic/box_interactive.html
for fun interactive games! Thanks for watching!
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