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2 cards from this section. Quick, good the night before a test.
Define a pure substance.
Think about what elements and compounds are.
Give an example of a heterogeneous mixture.
What can you see in a bowl of salad?
What is a pure substance?
Think of substances like gold or water.
True or False: A salad is a homogeneous mixture.
Can you see its individual parts?
Given a solution made by mixing salt into water, explain how to classify this solution, and how would you separate the salt from the water?
Think about everyday cooking processes.
You have two samples: a block of pure gold and a cup of lemonade. Classify each sample and describe the methods that could distinguish between the two types of matter.
Consider what tests apply to metals vs. liquids.
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