Atoms

AT MS

So what are atoms, exactly?

Atoms are what make up molecules and molecules are what make up matter and matter is what makes up material! Matter and material is what we and everything else are made of.

An example of atoms making up molecules and molecules matter is:

Water!

Water!

H

H

HH

O

O

=

=H2O

• (O=Oxygen and H2=Hydrogen x2)

This is the water mole-cule!

• (H2O=Water)

So what makes up an atom?

An atom is made up of a nucleus (the middle of the atom), and a couple of electrons. (the things that fly around the nucleus) Take these drawings below for example:

(It has been labelled so that you can see which ones are which!)

THE MAIN PARTS OF AN ATOM

ARE: THE NUCLEUS

(PROTONS AND NEUTRONS) AND THE ELECTRONS

WHICH FLY IN THE ELECTRON

CLOUD.

Helium vs. Oxygen

HERE IS A DIAGRAM OF A HELIUM ATOM (BELOW)-

And this is a

diagram of the

oxygen atom

(Right)-

So, the size difference. What is it?

It’s…MOVIE TIME!!!!!!!!!!!!!

http://youtu.be/H8ZMmZ_2BnI

Here is an experiment that I made: