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The following animations represent molecular-level models of three classifications of pure substance based on the chemical bonding involved - metallic (e.g. solid copper), ionic (e.g. solid sodium chloride), and intermolecular (e.g. liquid water, liquid oxygen). Animations comparing substances in different states, and undergoing changes of state, are also listed so that the differences in intraparticle and and interparticle bonding can be discussed. This topic is known for the student misconceptions and confusion it can cause without careful visualisation. Temperature is correlated with the degree of particle movement.

Periodic table giving state at any temperature from 0K to 6000K.

"http://yt.cl.nr/T1ux9D7-O38" This video shows 7 different inertia demos. Newton's 1st law of motion (law of inertia) states that objects at rest will remain at rest, and objects moving at constant velocity will remain moving at constant velocity unless acted upon by an outside unbalanced force.

"http://yt.cl.nr/JJ9yn8vLdig" Dr Roy Lowry demonstrates the explosive power of liquid nitogen returning to its gaseous state.

"http://yt.cl.nr/aOvIQyY30so" Carbon Dioxide is shown in all of its wonderful forms: solid, liquid, and gas!