midway middle school. produces a new substance *saliva breaking down food during chewing *cellular...
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Molecular Matter
Midway Middle School
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Examples of Chemical Change
Produces a new substance
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Chemical Change
*Saliva breaking down food during chewing
*Cellular respiration*Burning wood
*Rotting banana*Photosynthesis*Digesting food
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Physical Change
*No new substance is formed.*Only affects the appearance.
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Examples of Physical Change
*Melting ice*Cutting paper*Dissolving salt
*Chewing food into small food particles
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Chemical Changes in matter
Examples of Chemical Changes
*Color change*Heat absorbed or released*Formation of gas
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Organic Compounds
*Contain Carbon and Hydrogen*Come from living organisms
Examples:*Sugar (C6H12O6)*Rotting wood
*Paper
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How do you differentiate between elements and
compounds?
*Elements are made of only one kind of atom
*Elements are all listed on the periodic table
Examples of elements:Oxygen – O
Iron – FeSodium - Na
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How do you differentiate between elements and
compounds?
*Compounds are made of two or more elements chemically
combined
Examples of compounds:Water – H2O
Baking soda – NaHCO3
Carbon dioxide – CO2
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Chemical compounds
C6H12O6
*This is the chemical formula for aCarbohydrate
*How many elements are there in a molecule of Carbohydrate? 3
Carbon(C)Hydrogen(H)Oxygen(O)
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Chemical compounds
C6H12O6
*Are Carbohydrates an Organic or Inorganic compound?
*Why?Because it contains
carbon(C) and hydrogen(H)
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Photosynthesis
*Where does Photosynthesis take place?
Plant cells
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Cellular Respiration
*Where does cellular Respiration take place?
Plant and Animal cells