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Chemistry: 02 - The Atom > History Of The Atom > Flashcards

Flashcards in History Of The Atom Deck (9)
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1

Who were the first people to propose that matter was composed of small particles?

Greek philosophers

2

Who was the most important Greek philosopher who gave us the name atom?

Democritus

3

In relation to matter, what did Greek philosophers suggest around 400 BC?

That the tiny particles of which matter was composed were so small that they could not be broken down into even smaller particles i.e. they were indivisible

4

What was Democritus' contribution to chemistry?

He put forward the name 'atom' to describe the tiny particles of which all matter is composed

5

Who was the first to put forward an Atomic Theory?

John Dalton

6

What did John Dalton's theory state
(Definition)

All matter is made up of very small particles called atoms

All atoms are indivisible. They cannot be broken down into simpler particles

7

Atoms are indivisible, what does this mean?

They cannot be broken down into simpler particles

8

What is all matter made up of (according to John Dalton's theory)?

Very small particles called atoms

9

What are atoms said to be since they cannot be broken down into simpler particles?

Indivisible