Atomic Structure Flashcards
1
Q
What 3 main sub-atomic particles make up an atom?
A
Protons, neutrons, electrons
2
Q
The atomic number represents the….??
A
number of protons and number of electrons
3
Q
To find the number of neutrons you…?
A
mass number subtract atomic number
4
Q
What’s the structure of electron shells?
A
2,8,8,18
5
Q
What are isotopes?
A
Atoms with the same number of protons but different number of neutrons
6
Q
True or false: all metals from positive ions
A
True!
7
Q
Are ionic compounds negative, neutral or positive?
A
neutral
8
Q
What is an element?
A
A substance made up of only one type of atom
