Discuss the physical and chemical properties of matter and how you can determine physical and chemical changes. What do you think would change in your everyday life if matter could not change?
All properties of matter are either extensive or intensive and either physical or chemical. Extensive properties, such as mass and volume, depend on the amount of matter that is being measured. Intensive properties, such as density and color, do not depend on the amount of matter. Both extensive and intensive properties are physical properties, which means they can be measured without changing the substance's chemical identity. For example, the freezing point of a substance is a physical property: when water freezes, it's still water (H2O)—it's just in a different physical state.
A chemical property, meanwhile, is any of a material's properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity. Chemical properties cannot be determined just by viewing or touching the substance; the substance's internal structure must be affected for its chemical properties to be investigated.
Physical properties are properties that can be measured or observed without changing the chemical nature of the substance. Some examples of physical properties are:
On the other hand, chemical property is that measuring that property must lead to a change in the substance's chemical structure. Examples of chemical propertiesa are as follows:
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