 Atom diagram labeled - Science Quiz - An atom is the  smallest building block which makes up all matter. It defines the properties of each element and combines to form the  compounds that make up life and the Earth itself.
            Atom diagram labeled - Science Quiz - An atom is the  smallest building block which makes up all matter. It defines the properties of each element and combines to form the  compounds that make up life and the Earth itself.
            
            You might already be familiar with the  subatomic particles that compose an atom. Protons carry a positive electrical  charge and the much smaller electrons possess a negative charge, while neutrons  carry no charge at all.
            
            Protons and neutrons join at the center,  making up the nucleus of an atom. Electrons are found encircling the neutron at  varying energy levels.
            
            An atom itself is composed of mostly empty  space. Atoms typically carry the same amount of protons and electrons, meaning  that its positive and negative charges are equal and balanced. As a result,  atoms have no overall charge. Ionization occurs when atoms gain or lose  electrons, thenceforth containing either a positive or negative charge. In this  state, they are called ions.
            
            The valence shell is made of an atom’s outermost  electrons. These electrons can be shared or exchanged with other atoms of  different elements to create chemical bonds and form new substances.
            
            We’ve assembled this
            
             atom diagram  labeled
            
            with key details on the different parts of an atom as a  visual aid to learning about basic chemistry and the interactions between  particles occurring at the atomic level.