pure substances, mixtures, chemical changes
TRANSCRIPT
![Page 1: Pure substances, mixtures, chemical changes](https://reader035.vdocument.in/reader035/viewer/2022062522/5880f33c1a28abc3368b4df3/html5/thumbnails/1.jpg)
Unit 4: Matter
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What method of separation does this show?
Decantation
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What method of separation does this show?
Distillation
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What method of separation does this show?
Evaporation
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What method of separation does this show?
Filtration
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What method of separation does this show?
Magnetic Separation
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Pure substance or mixture?
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What type of mixture?
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What happens in a chemical change?•In a chemical change, a new substance is formed
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Chemical change or physical change?
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Fermentation
•Bacteria produce:
lactic acid
• Fungi produce: alcohol
Does fermentation need oxygen? No
Fungi or bacteria change organic substances into other substances.
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Combustion•Does it require oxygen? Yes
• It produces energy in the form of…
Heat and light
• It happens when oxygen reacts with:
A fuel
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Oxidation•Does it require oxygen? Yes
• Some metals react when they are exposed to air. This forms:
Rust