How do the properties of elements differ from the properties of compounds they form

The biggest difference between the elements and the compounds is that elements are substances that cannot be separated into simpler substances and more elements chemically joined combined make a compound. 
In a compound the atoms lose their individual properties and have different properties from the elements they are composed of. 
 The smallest particle of an element that has the properties of that element is the atom.

Nerves are problay the number 1 thing in the body

Synapse nervous system they process and transmit signals. in a neuron