Changes in the Atomic Model (OCR GCSE Physics A (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 about atomic structure?
What did the plum-pudding model suggest about atomic structure?
Ball of +ve charge with -ve electrons in it
What material was used in the alpha-scattering experiment?
What material was used in the alpha-scattering experiment?
Gold foil
What charge do alpha particles have?
What charge do alpha particles have?
Positive charge
What was the main observation from the alpha-scattering experiment?
What was the main observation from the alpha-scattering experiment?
Most alpha particles passed straight through
What did alpha particles bouncing straight back show about the atom?
What did alpha particles bouncing straight back show about the atom?
Centre contains a great deal of mass
What are the orbits of electrons around the nucleus called?
What are the orbits of electrons around the nucleus called?
Energy levels or shells
Who discovered neutrons in the nucleus?
Who discovered neutrons in the nucleus?
James Chadwick
Why do atoms have no overall charge?
Why do atoms have no overall charge?
No. of electrons = no. of protons
What is the radius of an atom?
What is the radius of an atom?
nm or m
What is the relative charge of a neutron?
What is the relative charge of a neutron?
0