Chadwick’s Discovery of Neutrons (HSC SSCE Physics): Quizzes
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Practise the questions
10 questions from this quiz
What are the two types of particles called nucleons?
What are the two types of particles called nucleons?
Protons and neutrons
What is the electrical charge of a neutron?
What is the electrical charge of a neutron?
Zero
By what percentage do the masses of protons and neutrons differ?
By what percentage do the masses of protons and neutrons differ?
About 0.1%
In 1930, which metal did Walther Bothe bombard with alpha particles?
In 1930, which metal did Walther Bothe bombard with alpha particles?
Beryllium
Why did Chadwick use paraffin wax in his experiment?
Why did Chadwick use paraffin wax in his experiment?
It is rich in hydrogen atoms and protons
Why are neutrons difficult to detect directly?
Why are neutrons difficult to detect directly?
They have no electrical charge
In the nuclear equation, what particle is represented by ?
In the nuclear equation, what particle is represented by ?
Neutron
How did Chadwick detect neutrons in his experiment?
How did Chadwick detect neutrons in his experiment?
Indirectly by detecting ejected protons
Which conservation laws did Chadwick apply to calculate neutron mass?
Which conservation laws did Chadwick apply to calculate neutron mass?
Momentum and energy
For sodium (, ), how many protons did the old hypothesis suggest in the nucleus?
For sodium (, ), how many protons did the old hypothesis suggest in the nucleus?
23 protons