Atoms and Elements

A very simple introduction to Elements

Atoms elements and compounds
You can think of elements as the basic ingredients that everything is made of. For example;

Water - H20 (hydrogen and oxygen)

Carbon Dioxide - C02 (carbon and oxygen)

Methane - CH4 (carbon and hydrogen)

Which is the most common element in the universe?

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This is no ordinary periodic table! As you see each box is a different shape and size, why do you think this is?

It's to show how much of each element exists in the universe in comparison to the others.

  • Which is the most common element?
  • What are the top 10 most common?

Atoms, Elements, Compounds

These three words are essential to this topic, make sure you learn them and can give examples.

We will begin this topic with a Hydrolysis experiment.

Water is a compound (made up of more than one type of element).

Hydrolysis is the splitting up of water molecules (H20) in to its component elements, can you remember the names of the two elements?

How could we split this molecule of water?

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Hydrolysis Experiment from Class

Here is a reminder of our experiment from class
Water Electrolysis
You need to produce a creative mini-documentary of YOUR investigation from class.

Include a scientific explanation of what is going on...

Upload your video to VIMEO

We will share all the videos on our Pinterest page (I will help you with this in class).

What is the difference in solids, liquids and gases?


The most important thing here is ENERGY!!

For example, ice, water and steam are all made of water particles (H20), but in each state the amount of energy changes. A common mistake students make is to say that when a water molecule changes state into a gas that the oxygen and hydrogen break away from each other....this is NOT TRUE!!

All particles vibrate (even in ice) and if you add more heat energy to them then they will vibrate more. If you keep adding more heat energy then eventually the molecules will begin vibrate more independently from each other and move more freely. If you add enough energy then the molecules can separate completely and become a gas.

Whats happening in the Large Hadron Collider?

The most expensive science experiment ever made! So far....