IC.  ODDS AND ENDS

 

Concept

Demonstrations

 

Allotropes

Allotropes are different atomic arrangements of an element which give rise to different forms of the same substance

 

            

            Reaction of White Phosphorus and Chlorine

 

Atomic Size

Atoms have physical size characteristics such as radius

 

 

            Explosive Decomposition

 

Energy

Energy is non-material and includes light, mechanical, heat, and radiation energy in addition to kinetic (motion) and potential (stored) forms

 

            

            Magnesium Burning

 

Ions

Ions are neutral atoms which have either lost electrons to become positive or gained electrons to become negative, known as cations and anions, respectively

 

            

            Flame Tests for Ions

            Light Flashes from Oxidation

 

Oxidation Numbers

Oxidation numbers are numbers assigned to atoms and ions to determine electron gain or loss when chemical reactions occur

 

            Hydrogen Gas from the Reaction of Magnesium Metal with Acid