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# Chemical Changes The images show various methods of chemical changes, such as: * **Formation of a precipitate:** Describes the process of a solid forming from a solution. * **Gas evolution:** Explains how gases are released during a chemical reaction. * **Combustion:** Shows how a fuel react...

# Chemical Changes The images show various methods of chemical changes, such as: * **Formation of a precipitate:** Describes the process of a solid forming from a solution. * **Gas evolution:** Explains how gases are released during a chemical reaction. * **Combustion:** Shows how a fuel reacts with oxygen to produce heat and light. It's described as a chemical change and that combustion produces $CO_2$ and water vapor. * **Filtration:** Demonstrates the process of separating a solid from a liquid by using filter paper. Diagrams of the process are shown. * **Distillation:** Explains the technique used to separate liquids with different boiling points. Diagrams of the distillation apparatus are given. The process of separating liquids by boiling and then condensing is described. * **Evaporation:** Shows the separating of a soluble solid from a solution through evaporation. The process of vaporizing a liquid to get a solid or another liquid is described. The images also include diagrams of each of the different processes. Additionally, the processes are explained in text on the computer screens.