These describe how a substance looks and behaves. There are two types of properties: physical and chemical. Watch this video about how physical and chemical properties affect which materials we ...

One set of properties of a substance is the way it reacts with another substance in a chemical reaction. In this activity, you mixed baking soda with citric acid in an indicator solution. You also ...

The different atoms and molecules of a substance give it its characteristic solubility. In earlier grades, students observed and tested objects and materials, and saw that the items could be grouped ...

of specific chemical substances in the environment, and the Safety Data Sheets (SDS) system, which provides information concerning the properties and the handling of specific chemical substances. This ...

Jake Ryks provides "firefighter" definitions of vapor pressure, flammability, toxicity and other technical terms to drill down to practical knowledge for hazmat response.