The Atom (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is an atom?
What is an atom?
Basic building block of all matter
Which subatomic particle is electrically neutral?
Which subatomic particle is electrically neutral?
Neutron
What does the nucleus of an atom contain?
What does the nucleus of an atom contain?
Protons and neutrons
What is the atomic number ()?
What is the atomic number ()?
Number of protons
What is the atomic number of iron?
What is the atomic number of iron?
26
How is the mass number calculated?
How is the mass number calculated?
Protons + neutrons
What are isotopes?
What are isotopes?
Same protons, different neutrons
How many times more massive is a proton than an electron?
How many times more massive is a proton than an electron?
1,836 times
What is the maximum number of electrons in the first shell?
What is the maximum number of electrons in the first shell?
2
What is the valence shell?
What is the valence shell?
The outermost electron shell
When does an atom become a positive ion?
When does an atom become a positive ion?
When it loses electrons
What happens when an electron drops to a lower energy level?
What happens when an electron drops to a lower energy level?
Atom emits light