Topic 1.1- Flashcards
1
Q
What is the structure of an atom
A
central nucleus with protons and neutrons, electrons orbiting the nucleus in different energy levels
2
Q
What is the mass and charge of a proton
A
charge- +1 mass- 1
3
Q
What is the mass and charge of a neutron
A
charge- 0 mass- 1
4
Q
What is the mass and charge of an electron
A
charge- -1 mass- negligible
5
Q
Define ion
A
An atom that has a positive or negative charge
6
Q
What is the atomic number
A
How many protons an element has, determines the element it is
7
Q
What is the mass number
A
the number of protons and neutrons together
8
Q
A
