Today we will do an investigation to understand how molecules of different substances can come together and release energy.
A chemical reaction is when substances come together, react, and CHANGE to become new, different substances.
We call this a chemical change. A chemical change cannot be undone or reversed.
Which is an example of chemical reactions or chemical changes?
Burning wood
Ice melting
Baking a cake
Cooking an egg
Cutting a piece of wood
Dissolving salt in water
Butter melting on toast
Fizzing soda
Clay molded into a new shape
Rust forms on a nail
When you have a chemical reaction, the substances that go into the reaction are called REACTANTS.
The substances that come out of the reaction are called products.
Mitochondria
Exothermic
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