Reactivity in science refers to how various chemicals participate in chemical reactions when they are exposed to other substances. A chemical that reacts easily with other substances is considered highly reactive.
One example of a reactive material is magnesium, which burns brightly when heated. In contrast, platinum does not burn when heated and it is considered non-reactive. Other chemicals that have little reactivity include gold and silver. Potassium, sodium and calcium rank near the top of most-reactive materials. Some chemicals react together so strongly that they create a new substance called a compound. A common example of a compound formed through reactivity is water, formed when hydrogen and oxygen react.Learn More
When something can be dissolved or liquefied in the presence of another substance, it is considered soluble by scientific standards. The degree of solubility can vary. Substances can be completely insoluble, soluble only under certain conditions or extremely soluble under most conditions.Full Answer >
According to the American Fuel and Petrochemical Manufacturers, diesel fuel is refined from crude oil through the use of a distillation column, making use of the varying boiling points of all the various chemicals in crude oil to separate products from the crude oil mixture. Diesel fuel is then further refined to remove pollutants in order to achieve the cleaner-burning low-sulphur diesel used commercially.Full Answer >
A precise but simple explanation of the difference between a mixture and a solution is that a mixture is a substance made of other substances that are mixed but not joined together, while a solution is a substance made of two or more substances that do join together. If the kids are older, it should be noted that a chemical reaction takes place to create a solution and that no such reaction occurs in a mixture.Full Answer >
The pKa value of an acid is used to determine the ability of an acid to donate protons in chemical reactions. Weak acids such as citric acid have a high pKa. The pKa of citric acid is 6.5.Full Answer >