1.Chemistry Revision 2. Atoms All chemical elements are made up of atoms Every atom is made up of smaller particles; neutrons and protons in the atom’s nucleus which is…
Atomic structure02 M02_CHE_SB_IBDIP_9755_U02.indd 56 07/03/2014 11:31 Essential ideas 2.1 The mass of an atom is concentrated in its minute, positively charged nucleus. 2.2…