Radioactive Decay (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 type of process is radioactive decay?
What type of process is radioactive decay?
A random process
What is the unit for measuring activity?
What is the unit for measuring activity?
Becquerel (Bq)
What is count-rate?
What is count-rate?
Number of decays recorded per second
What is an alpha particle?
What is an alpha particle?
A helium nucleus (2 protons, 2 neutrons)
How ionising is alpha radiation?
How ionising is alpha radiation?
Highly ionising
Approximately how far can alpha radiation penetrate in air?
Approximately how far can alpha radiation penetrate in air?
5 cm
What is a beta particle?
What is a beta particle?
An electron
What can stop beta radiation?
What can stop beta radiation?
A sheet of paper
By how much does the mass number decrease in alpha decay?
By how much does the mass number decrease in alpha decay?
4
By how much does the atomic number decrease in alpha decay?
By how much does the atomic number decrease in alpha decay?
2
What happens to the atomic number in beta decay?
What happens to the atomic number in beta decay?
It increases by 1
What do gamma rays do to the nucleus?
What do gamma rays do to the nucleus?
Don't change charge or mass