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introduction
introduction
Scientists use classification systems to help them work with the millions of compounds that have been discovered or synthesized. A very useful way to classify compounds is by their physical and chemical properties.
Physical properties
Physical properties
Physical properties describe the physical appearance and composition of a substance.
chemical properties
chemical properties
Chemical properties describe the reactivity of a substance. For example when calcium reacts vigorously when placed in water.
pure substances and mixtures
pure substances and mixtures
Read pages 14-15 to learn about classification of matter. This should be review from grade 8. Please ensure you know all the bold terms outlined on these pages: pure substance, element, compound, mixture, mechanical mixture, heterogeneous, homogeneous, suspension and solutions
classification of matter
classification of matter
Other concepts to know...
Other concepts to know...
learning activities
learning activities
Read pages 7-15 and complete the "Check and Reflect" on page 17 #1-9
Next: You are now ready to move on to section A1.3
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