Midway Middle School. Produces a new substance Saliva breaking down food during chewing Cellular respiration Burning wood Rotting banana *Photosynthesis.

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Presentation transcript:

Midway Middle School

Produces a new substance

*Saliva breaking down food during chewing *Cellular respiration *Burning wood *Rotting banana *Photosynthesis *Digesting food

*No new substance is formed. *Only affects the appearance.

*Melting ice *Cutting paper *Dissolving salt *Chewing food into small food particles

Examples of Chemical Changes *Color change *Heat absorbed or released *Formation of gas

*Contain Carbon and Hydrogen *Come from living organisms Examples: *Sugar (C 6 H 12 O 6 ) *Rotting wood *Paper

*Elements are made of only one kind of atom *Elements are all listed on the periodic table Examples of elements: Oxygen – O Iron – Fe Sodium - Na

*Compounds are made of two or more elements chemically combined Examples of compounds: Water – H 2 O Baking soda – NaHCO 3 Carbon dioxide – CO 2

C 6 H 12 O 6 *This is the chemical formula for a Carbohydrate *How many elements are there in a molecule of Carbohydrate? 3 Carbon(C) Hydrogen(H) Oxygen(O)

C 6 H 12 O 6 *Are Carbohydrates an Organic or Inorganic compound? *Why? Because it contains carbon(C) and hydrogen(H)

*Where does Photosynthesis take place? Plant cells

*Where does cellular Respiration take place? Plant and Animal cells

Qualitative *Observation using the senses Quantitative *Observation using numbers

* The players have hockey sticks *They are wearing helmets

* There are three hockey sticks *There are two hockey players