Compounds Atoms Molecules

Question 1

Atomic number

Answer 1

Number protons

Because an atom wants to be neutral it also tells us the number of electrons.

Question 2

Atomic mass

Answer 2

Number of neutrons and protons

Neutrons=Atoms=Mass=Atomic number

Question 3

Element

Answer 3

Pure substance that only contain one dement e.g. helium and magnesium

Question 4

Atom

Answer 4

The smallest particle of an element that can exist

Question 5

Compounds

Answer 5

A substance formed from two of more different by les of elements bonded together. E.G. water ( H2o), Co2, salt glucose cc6 H12oa

Question 6

Molecules

Answer 6

A group of two or more atoms that are bonded together e.g. water, carbon dioxide, cHo, oxygen Co2