Free Science Videos and Lectures

A metal crucible is filled with iron-oxide and aluminum. A small amount of potassium, sugar and chloride is placed on top of iron-oxide aluminum mixture. A few drops of concentrated sulphuric acide...

This science video contains:
iron, reaction, potassium, iron oxide, aluminum, chloride, sulphuric acid, exothermic, mixture, reduction

Sodium does not react easily with oxygen at a room temperature so it has to be heated up a little for the reaction to start.

Since air is mostly oxygen once the reaction starts it gets pretty...

This science video contains:
explosion, heat, burning, reaction, fire, air, oxygen, sodium

Since sodium reacts slower than other alkali metals, the reaction is so intense. It just burns for a while.

This video was done by University of Oxford.

This science video contains:
burning, chlorine, reaction, fire, alkali, sodium

Sodium is a chemical element which has the symbol Na (Latin: natrium), atomic number 11, atomic mass 22.9898 g/mol, oxidation number +1.

Sodium is a soft, silvery white, highly reactive element...

This science video contains:
explosion, water, burning, reaction, fire, alkali, sodium, na

Watch how a "marshmallow" is made using just a few chemical elements.

First we take hydrogen preoxide, then we add liquid soup, we mix it together and finally add a little of potassium iodide and...

This science video contains:
reaction, marshmallow, marsh mallow, hydrogen peroxide, liquid soup, potassium iodide