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The scientist John Dalton lived over 200 years ago - Edexcel - GCSE Chemistry - Question 2 - 2021 - Paper 1
Question 2
The scientist John Dalton lived over 200 years ago. (a) John Dalton suggested an early model of atoms. When Dalton first described atoms he said that - all elemen... show full transcript
Worked Solution & Example Answer:The scientist John Dalton lived over 200 years ago - Edexcel - GCSE Chemistry - Question 2 - 2021 - Paper 1
Step 1
Give two differences between Dalton's model of atoms and today's model of atoms.
Answer
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Dalton's model proposed that atoms are indivisible, whereas today's model recognizes that atoms are made up of smaller subatomic particles such as protons, neutrons, and electrons.
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Dalton believed that all atoms of a given element are identical, while today's atomic theory acknowledges that neurons can vary in number, leading to different isotopes of the same element.
Step 2