the smallest STABLE unit of matter IS an atom
cellular level
A completley filled out electron level makes the atom stable
Stable.
An atom is the smallest particle of matter that still retains the characteristics of the original matter. Within an atom, protons, neutrons, and electrons make up the basic building blocks of elements.
group 18
all the way down to the smallest and then some
Species is the smallest level of classification in biology.
Yes, MOST matter is extremely stable. There are exceptions however, the most obvious of which is uranium (there are plenty of other unstable elements (elements with an extremely short half-life), but uranium has become popularized because it is one of the most unstable). Matter that is particularly unstable is used in nuclear reactions, because it is much easier to split than stable matter. For example, although there is enough matter in a piece of chalk that if transformed into pure energy would level a city, the atoms are so stable that it is seemingly impossible to release this energy.
cell is the smallest level of organization in a unicellular organism
Tertiary Level
Order
cellular level
Atoms... ---> protons, nuetrons, electrons ----> up and down quirks, subatomic particles and if you believe in string theory----. quarks are made up of vibrating springs.
A completley filled out electron level makes the atom stable
you hae to be level 9 :)
plants and seeds
The smallest classification level is the species. It is the most specific category in the classification system, representing a particular type of organism.