OBJECTIVES:
1. Classify objects into different groups based on their properties.
2. Differentiate between physical and chemical properties.
3. Distinguish between intensive and extensive physical properties.
4. Compare solids, liquids, and gases based on compressibility, structure, shape, and volume.
5. Classify matter as pure substance or mixture by investigating their properties.
There are many ways to classify the things we come across in daily life. Just as we classify people in ways such as age, sex, religion, and race., chemicals can be classified. The image above classifies things according to safety standards. Explore some of the other classifications.
Describing the properties of matter is the first step in gaining power over them. Do you know how they behave? Do you have the words to describe them? At left are the different phases, which are all based on temperature. In your notes, decide how temperature causes these phase changes.
Physical PropertiesCharacteristics of a substance that can be used to describe it.
Pay careful attention to the two types of physical properties and their difference to chemical properties. |
MixturesElements are identified by their NUMBER OF PROTONS, compounds are chemically combined elements, but what about when you put these together?
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Chemical Properties
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Recent News
The great Aristotel thought that there were four elements: air, fire, earth, and water. We have since come to realize something extremely different. Find out more here.