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Examen
AQA AS Physical Chemistry 2024 Exam Questions And Answers
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---29mayo 20242023/2024A+
- AQA AS Physical Chemistry 2024 
Exam Questions And Answers 
 
Who described atoms as solid spheres that make up different elements and when? - 
ANSWER- John Dalton in the 19th century 
Who suggested that atoms of a particular element had the same mass and atoms of 
different elements had different masses and when? - ANSWER- John Dalton in 1803 
Who discovered the electron and when? - ANSWER- JJ Thomson, 1897 discovered 
electrons proving atoms weren't indivisible or solid. 
New model named p...
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