organic compounds and plants
TRANSCRIPT
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Organic Compounds and Plants8SCIENCE: Wed. Feb. 2/
Thurs. Feb. 3
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Why learn about plants?• Plants produce oxygen for humans and other
organisms to breathe• Plants are important because they are producers
– Make their own food and are a food source for other consumers and all other links in the food chainE.g. produce sugars (carbohydrates) to eat, a rabbit eats the grass and gets energy from these carbohydrates, and fox eats rabbit to gain that energy!
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Organic compounds• Plants make an organic compound,
for energy, called carbohydrates– All organisms (living things) obtain
their energy from carbohydrates
• Organic compounds are compounds that contain carbon (C )– Reminder: compounds are combinations of elements from the
periodic table
• Carbohydrates are one type of organic compound that contains only C, H and O
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Organic compounds: Hydrocarbons
• One type of organic compound is the hydrocarbon
• What elements make up this compound?– Carbon (C ) and hydrogen (H )
• You already know many types:– Propane gas (cooking)– Butane (lighters)
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2 TYPES OF HYDROCARBONS
• There are 2 types:• Saturated
• Unsaturated
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HYDROCARBONS• SATURATED • UNSATURATED
• What is the difference?– Saturated hydrocarbons have
all of their C atoms connected to an H atom
– Unsaturated hydrocarbons still have space for more H atoms