chemistry paper 1 Flashcards
1
Q
what is an atom
A
a tiny particle that makes up all matter
2
Q
element
A
a substance that is made up of one type of atom
3
Q
subatomic particles
A
a particle that is smaller than an atom
4
Q
electrons
A
a subatomic particle that has a negative charge
5
Q
protons
A
a heavy submatomic particle with a posative charge
6
Q
neutrons
A
a heavy submatomic particle with no charge (neutral)
7
Q
relative masses
A
the mass of somthing compared to the mass of somthing else which is often given the mass of 1
8
Q
relative charges
A
the charge of a particle compared to a proton
9
Q
nucleus
A
it is at the centre of all atoms and contains protons and neutrons
10
Q
electron shells
A
an orbit electrons follow around the nuclus of an atom
11
Q
A
