Chemistry End of Year Flashcards
1
Q
What is the big number on an element in the periodic table
A
Mass number (protons + electrons)
2
Q
What is the small number on an element in the periodic table
A
The atomic number (neutrons = electrons)
3
Q
How to recognise Ionic compounds?
A
High melting and boiling points, dissolves in water, hard but brittle
4
Q
What is a bond
A
The force of attraction between two or more charged particles (electrostatic)
5
Q
Why do atoms bond?
A
To get a full outer shell
6
Q
What are the three types of bonding?
A
Ionic, covalent, metallic
7
Q
A
