The Atom Flashcards
1
Q
What is the structure of an atom?
A
Contains a central nucleus containing positive protons and neutral neutrons, orbitted by negative electrons
2
Q
What is the mass number?
A
The number of PROTONS + the number of NEUTRONS in the nucleus of an atom
3
Q
What is the atomic number?
A
The number of PROTONS in the nucleus of an atom. This also equals the number of ELECTRONS
4
Q
How do you work out the number of protons?
A
Look at the atomic number (bottom)
5
Q
How do you work out the number of electrons?
A
Look at the atomic number (bottom)
6
Q
How do you work out the number of neutrons?
A
Work out the mass number - the atomic number (top-bottom)
