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PURE SUBSTANCES AND MIXTURES SCIENCE .pdf
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- 2. LearningGoal I can describewhat matter, pure substances and mixtures are I will be able to classify substances as pure substances or mixtures
- 3. Solid Whatis matter? Liquid Gas Matteris any material that occupies space and has mass It includes all solids, liquids and gases
- 4. Mixtures are combinationsof two or more pure substances that are not combined chemically Mixtures Dirt
- 5. Pure Substance PureSubstance Mixture PureSubstances A pure substance is made up of only one type of matter A pure substance cannot be separated easily Examples: Carbon dioxide, gold, pure water, salt
- 6. Soft drink isa mixture of five different substances, but it looks and behaves like a single substance water sweetener flavouring flavouring carbon dioxide gas Mixtures
- 7. decanting filtration Mixtures Mixtures can beseparated in to their pure substances by techniques including decanting and filtration Examples: Seawater (mixture of salt and water) 1. Air (mixture of carbon dioxide, nitrogen, oxygen) 2. Alloy (mixture of metals) 3.
- 8. TypesofMixtures You can seethe properties of the different types of matter in a heterogeneous mixture as no dissolving occurs Heterogeneous mixtures are also called suspensions Examples: Oil and water 1. Sand and water 2. Chocolate chip cookies 3.
- 9. TypesofMixtures In a homogenousmixture, you cannot see the difference between the types of matter. This is because dissolving occurs. Homogenous mixtures are also called solutions Examples: Salt water 1. Clean air 2. Milk 3.
- 10. Cordial Classifyingmatteraspuresubstancesormixtures We do: Classifythe following as pure substances or mixtures Gold Water Nitrogen Lead Pencil Torch battery Lead
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