Structure of the Atom (Junior Cert Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is an atom?
What is an atom?
Smallest particle of an element
What is the charge on a proton?
What is the charge on a proton?
Positive ()
Where are electrons found in an atom?
Where are electrons found in an atom?
In the electron cloud outside nucleus
What is the relative mass of an electron?
What is the relative mass of an electron?
unit
Why are atoms normally electrically neutral?
Why are atoms normally electrically neutral?
Equal numbers of protons and electrons
What does the atomic number tell us?
What does the atomic number tell us?
Number of protons in the nucleus
How is mass number calculated?
How is mass number calculated?
Protons + neutrons
An atom has mass number and atomic number . How many neutrons does it have?
An atom has mass number and atomic number . How many neutrons does it have?
neutrons
In the nuclear formula , what does the bottom number () represent?
In the nuclear formula , what does the bottom number () represent?
Atomic number
Which element has protons according to the first elements?
Which element has protons according to the first elements?
Oxygen (O)