Chemistry Topic 1 - The Structure of The Atom, Periodic Table, Groups 1 and 8, Transition Metals, Model of the Atom.

The Atom Is Made Up Of Which Three Parts?

The [blank_start]Centre[blank_end] of an [blank_start]Atom[blank_end] is called the [blank_start]Nucleus[blank_end]. The [blank_start]Nucleus[blank_end] is a [blank_start]very small part[blank_end] of the [blank_start]Atom[blank_end] but is responsible for [blank_start]99.99%[blank_end] of the [blank_start]Mass of the Atom[blank_end]. An Example Could Be A Pea In The WHole Of The O2

Around the [blank_start]Nucleus[blank_end] are one or more [blank_start]Electrons[blank_end]. These Electrons are [blank_start]very small[blank_end] and [blank_start]move around the Nucleus[blank_end] much like the [blank_start]Moon moves around the Earth[blank_end]. We call the [blank_start]"orbits"[blank_end] shells. An Atom can have many [blank_start]shells[blank_end]. An Atom's [blank_start]aim in life[blank_end] is to have a [blank_start]full outer shell[blank_end] by either [blank_start]gaining[blank_end] electrons or [blank_start]losing[blank_end] electrons.