What is an element? [1]
Made up of only one type of atom
What is a mixture? [1]
Two or more different atoms which are NOT chemically bound
What is a compound? [1]
Two or more different atoms which ARE chemically bound.
What is the atomic number? [1]
The number of electrons/protons there are in an atom.
What is the atomic mass? [1]
Neutrons + Protons