Changes in the Atomic Model (OCR GCSE Physics A, Combined (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What did the Ancient Greeks believe about atoms?
What did the Ancient Greeks believe about atoms?
Tiny spheres that cannot be divided
In which year were electrons discovered?
In which year were electrons discovered?
1897
What did the plum-pudding model suggest an atom was?
What did the plum-pudding model suggest an atom was?
Ball of positive charge with negative electrons in it
Which material was used in the alpha-scattering experiment?
Which material was used in the alpha-scattering experiment?
Gold foil
What type of charge do alpha particles have?
What type of charge do alpha particles have?
Positive
What happened to most alpha particles in the experiment?
What happened to most alpha particles in the experiment?
They passed straight through
What did the experiment show about atoms?
What did the experiment show about atoms?
They are mainly empty space
Why did some alpha particles bounce straight back?
Why did some alpha particles bounce straight back?
Centre has great mass
What are the orbits that electrons occupy called?
What are the orbits that electrons occupy called?
Energy levels or shells
Who discovered neutrons?
Who discovered neutrons?
James Chadwick
What is the radius of an atom?
What is the radius of an atom?
nm ( m)
What is the relative charge of an electron?
What is the relative charge of an electron?
-1