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Chemical Reactions

Baking Bread

"Cleaning" copper pennies

two tarnished pennies

pennies placed in vinegar and salt

placing pennies in ketchup

this also removes the tarnish

our attempt at removing oxidation using ketchup

our smiley face

removing more tarnish by means of a chemical reaction

shiny silver

http://www.biglearning.com/article-cleaning-copper-science.htm

Mentos + Soda = Carbon Dioxide Eruption

http://www.stevespanglerscience.com/experiment/109

Great Video by the guys who made this trick famous http://www.eepybird.com/

eruption 1

eruption 2

Goop - cornstarch, water & food coloring

http://www.stevespanglerscience.com/experiment/00000047

Slime - glue, Borax & food coloring

http://www.stevespanglerscience.com/experiment/00000039

Naked Egg

It takes 7 days to see a naked egg.  The calcium carbonate dissolves in the vinegar making us able able to see inside the egg.  Cool!

http://www.stevespanglerscience.com/experiment/00000205

raw egg placed in a glass of white vinegar

After a week, we were able to see the yolk inside the egg and the egg felt rubbery.

Homemade Ice Cream in a Bag

http://www.stevespanglerscience.com/experiment/00000148

cream + vanilla + sugar in a small baggie placed inside a larger baggie filled with ice and rock salt

shaking bags

still shaking

tasting

Yummy!

Acids & Bases

http://www.stevespanglerscience.com/experiment/00000124

cabbage blended to make indicator juice

acid - neutral - base

 

 Making Playdough- a chemical reaction

Good Homemade Playdough Recipe

 

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