atoms, elements and compounds Flashcards
(7 cards)
1
Q
what is an atom
A
the smallest building block of all matter
2
Q
what is an element
A
it is made up of a single type of atom only
3
Q
what is a compound
A
they are made up of 2 or more different types of atom which are chemically bonded
4
Q
what is a molecule
A
2 or more of the same types of atom chemically bonded together
5
Q
what is the relative mass of proton
A
1
6
Q
what is the relative mass of neutron
A
1
7
Q
what is the relative mass of an electron
A
0.0005
