pure substances, mixtures, chemical changes
Post on 20-Jan-2017
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Unit 4: Matter
What method of separation does this show?
Decantation
What method of separation does this show?
Distillation
What method of separation does this show?
Evaporation
What method of separation does this show?
Filtration
What method of separation does this show?
Magnetic Separation
Pure substance or mixture?
What type of mixture?
What happens in a chemical change?•In a chemical change, a new substance is formed
Chemical change or physical change?
Fermentation
•Bacteria produce:
lactic acid
• Fungi produce: alcohol
Does fermentation need oxygen? No
Fungi or bacteria change organic substances into other substances.
Combustion•Does it require oxygen? Yes
• It produces energy in the form of…
Heat and light
• It happens when oxygen reacts with:
A fuel
Oxidation•Does it require oxygen? Yes
• Some metals react when they are exposed to air. This forms:
Rust
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