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Physical Properties |
A physical property is a characteristic of a substance that does not include a chemical change. Examples are density, color, hardness and texture. |
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A physical property is a characteristic of matter that can be observed or measured without the matter going through a chemical change. Mass is an example of a physical property. Mass is the amount of matter in an object. It is constant everywhere in the universe because the amount of matter doesn't change. Weight is also a physical property. Weight is the measure of the force of gravity on an object and can be expressed as newtons (N). Volume , another physical property, is the measure of the amount of space an object occupies. Density is the mass of an object per unit volume. Density can be found by dividing the mass of an object by the object's volume. Another example of a physical property is malleability, which is an objects capability to be shaped or formed by hammering. Conductivity is the ability of an object to transmit electricity, heat, or sound. Boiling point is the temperature at which a liquid boils.
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These two desserts are the same shape, but have different colors and textures.
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We need to know what physical properties are and the different forms of them in order to identify different objects. Two objects could look exactly the same, but might have different melting and boiling points. If we didn't know about melting and boiling points, we might think that the two objects were the same thing. Everything that we deal with has physical properties that help us to tell the difference between them. If there was no color, it would be much harder to tell the difference between many things, such as water and coffee.
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