Introduction to Chemistry, Matter, The Elements
A collection of different elemental materials to display to the class. |
Two balloons, one filled with hydrogen and the other with helium are ignited with a lit splint, with different results. |
This demo illustrates two concepts: the difference between an element and a chemical compound as well as the difference between heterogeneous and homogeneous mixtures (solutions). |
The separation of iron filings from sugar will demonstrate a heterogeneous mixture. |
A Geiger counter is used to detect radiation from certain objects. |
A piece of granular calcium metal is added to water. After a few moments a vigorous reaction takes place producing hydrogen gas and calcium hydroxide. |