Atoms
Science: KS3, topic 2.3.1
Atoms
Everything in the universe is made of tiny particles. We call these particles ‘atoms’. Solids, liquids and gases are made of atoms arranged in different ways. You are also made completely of atoms!
Atoms
- Atoms are far too small to see with our eyes, or even with a normal microscope.
- There is a special type of strong microscope called an electron microscope that allows us to see their outline though.
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The atomic model
- Atoms were discovered by a scientist called John Dalton.
- There are lots of different types of atom, which all have different names.
- We often show different atoms by giving them different colours in a diagram.
Test yourself on Atoms
Which of these statements about atoms is true?
What do the different colours of atoms mean in a diagram?
Who discovered atoms?
Your body is made completely of atoms. There are lots of different types of atom. What can you conclude about the atoms in your body?
Normal microscopes cannot show the outline of atoms, but a special strong microscope called an electron microscope can. What does this tell us about electron microscopes?