Key Terms

Paige Perryman 4th

Properties

Physical- is any property you can see, smell, touch, hear or otherwise detect and measure without performing a chemical reaction. Such as mass, density, color, boiling point, temperature, and volume.

Chemical- is a property or behavior of a substance when it undergoes a chemical change or reaction.Examples can include toxicity, oxidation, and flammability. Iron oxidizes and becomes rust. The difference between physical and chemical properties is physical property is an aspect of matter that can be observed or measured without changing it while chemical properties may only be observed by changing the chemical identity of a substance.

Extensive- is a property of matter that changes as the amount of matter changes. Examples of this include mass and volume. As more matter is added to a system, both mass and volume changes.

Intensive- is a property of matter that does not change as the amount of matter changes. Density, specific gravity and specific heat are all intensive properties.

The difference between extensive and intensive properties is that extensive depends on the amount of matter present and intensive does not.


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Changes

Physical- is where you can change the appearance, but never the composition For example, if you took a pencil and broke it. You still have the same pencil just a different appearance.

Chemical- is any change that results in the formation of new chemical substances. Such as iron rusting or gas burning. They change appearance and composition from one substance to another.

Mixtures- are a material system made up of two or more different substances which are mixed but are not combined chemically. For example mixing oil and water. They are mixed together, but the kept their original components.

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