Photo AI
The scientist John Dalton lived over 200 years ago - Edexcel - GCSE Chemistry Combined Science - Question 1 - 2021 - Paper 1
Question 1
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 Combined Science - Question 1 - 2021 - Paper 1
Step 1
Give two differences between Dalton’s model of atoms and today’s model of atoms.
Answer
-
Dalton's model suggests that atoms are indivisible, whereas modern atomic theory states that atoms can be divided into sub-atomic particles such as protons, neutrons, and electrons.
-
In Dalton's model, all atoms of a given element are identical, while current understanding acknowledges that atoms of the same element can have different numbers of neutrons, leading to isotopes.
Step 2