Title: How can we classify matter?

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Presentation transcript:

Title: How can we classify matter? Brainstorm 1. What is a pure substance? 2. What is a mixture?

Item and description Pure substance or Mixture 1. 2. 3. 4. 5. 6.

First: List and include a brief description of the item Classify each item as either a pure substance or a mixture. Then: 1. Decide as a group what is the difference between a pure substance or a mixture.

Pure Substance A substance is matter with a specific and definite composition and a specific set of properties. This means it is always made up of the same combination of atoms Can be an element or compound.

Mixture Two or more substances that have been joined together but not chemically combined Mixtures are NOT considered pure substances Each substance in the mixture keeps its own properties Can be separated by simple, physical means Ex: salad, lemonade, brass

Homework Identify an item around your house that is matter. Complete a CER that addresses the following: Is the item a pure substance or a mixture? THIS WILL BE COLLECTED AND GRADED!