chemistry GCSE Flashcards
1
Q
Compound
A
Two or more elements chemicaly bonded together
2
Q
Atoms
A
The smallest particle of a chemical element that can exist
3
Q
Element
A
a substance made up of only one type of atom, each with the same number of protons
4
Q
Periodic table
A
elements are in order of atomic number in periods and groups
5
Q
Nucleus
A
Positively charged object composed of protons and neutrons at the centre of every atom with one or more electrons orbiting i
6
Q
Electrons
A
Electrons orbit the nucleus in shells (or energy levels)
