Substances when reacted in the presence of air or oxygen.Īcids react with carbonates, hydrogen carbonates, etc. When substances react with each other by using some external or internal resources. Copper, iron, and even silver react with air and water, producing a dull finish. These metals do not react easily with air or water, so they will not deteriorate over time, as does copper or iron. The chemical properties of a substance will also determine its usefulness.įor example, jewelry is often made of gold or platinum. Temperature at which liquid converts to vapour.ĭegree to which the material reflects light Temperature at which solid converts to liquid. Changes in the state (melting and boiling) are also examples of physical change. For example, iron glows in red color when it is heated. Physical change may involve a change of appearance, but no new substances are formed. Fireworks designers make use of this chemical property. Some substances combine explosively when heated.
Burning brightly is a chemical property of magnesium. Chemical properties are the ones when one substance reacts with the other substance.įor example, when you light a magnesium sparkler, it goes through a chemical change that you can see it glows in a bright white color. Properties and their changes:Ī chemical change is a change in matter that occurs when substances recombine to form new substances. Chemical properties, which include reactivity and combustibility, can be detected only by observing how a substance reacts with other substances. Physical properties, which include state, color, and density, can be measured or observed by simply examining an individual substance. All matter has physical and chemical properties. Matter is anything that has mass and volume.
For example: The air we breathe, the food we take, the things which are around us all are matter. Some of them are living, and some are non-living.
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