Quick Review Atoms Elements Molecules Compounds What is a Chemical Reaction For a chemical reaction to take place we have to have two things Reactants Products Chemical Reactions cont This forms a chemical equation similar to equations you see in your math class ID: 630088
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Slide1
Chemical Reactions
http://www.middleschoolchemistry.com/lessonplans/chapter6/lesson1Slide2
Quick Review
Atoms
Elements
Molecules
CompoundsSlide3
What is a Chemical Reaction?
For a chemical reaction to take place, we have to have two things:
Reactants
ProductsSlide4
Chemical Reactions cont.
This forms a chemical equation, similar to equations you see in your math class.
Reactant + Reactant ProductSlide5
Chemical Reactions Cont.
What are the reactants?
The reactants are atoms, molecules, and compounds.
What are the Products?
The products are atoms, molecules, and compounds that are formed from the reactants. Slide6
Candle Demonstration
Lighting a candle is a chemical reaction; consider these questions:
What is keeping the candle burning?
Wax
Oxygen
(These are the reactants).Slide7
Candle Demonstration cont.
What do you think we get from the candle burning?
Heat (this is because of the chemical reaction that is taking place. Remember that energy can be in the form of heat.)
light
Carbon dioxide
Water vapor
(These are the products) Slide8
Candle Demonstration cont.
What would happen if we put a jar over the candle?
After a candle burns for a while, it gets smaller and smaller. Where does some of the candle wax go? Slide9
Chemical Equation for Burning Candle.
http://www.middleschoolchemistry.com/multimedia/chapter6/lesson1#chemical_reaction_methane
Finish guided notes using the URL link above.Slide10
White Board Hold-ups
What does
H
2
O
stand for? Slide11
White Board Hold-ups
What does CO
2
stand for? Slide12
White Board Hold-ups
What does C
6
H
12
O
6
stand for?Slide13
White Board Hold-ups
What does O
2
stand for?Slide14
White Board Hold-ups
A chemical reaction has to have two things, what are they? Slide15
White Board Hold-ups
In the chemical equation below, label the reactants
Light energy + H
2
O + CO
2
C
6
H
12
O
6
+ O
2Slide16
White Board Hold-ups
In the chemical equation below, label the
products:
Light energy + H
2
O + CO
2
C
6
H
12
O
6
+ O
2