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- Slide: 1
- Sure thing, Alvin! But take a seat because this is a lot to take in.
- Hi, Sir Oliver. I am coming to you today to ask for some help. Can you tell me about John Dalton's atomic theory?
- Slide: 2
- Anyways, John Dalton proposed his atomic theory in the early 19th century, around 1804. His theory is based on several key postulates:1.All matter is made up of tiny, indivisible particles called atoms.
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- 2.Atoms of a given element are identical in mass and properties.3.Atoms of different elements can combine in fixed whole-number ratios to form compounds
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- 4.Atoms of a given element are identical in mass and properties.5.In chemical reactions, atoms are rearranged, combined, or separated.
- That sounds interesting! But were there any limitations to Dalton's theory?
- Slide: 5
- Yes, there were some limitations. For instance, we now know that atoms can be divided into smaller particles, like protons, neutrons, and electrons.
- Slide: 6
- Ohh ok i get it, thank you so much teach!
- Yeah no problem Alvin, just study very hard because education is the key to life.
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