Chemistry
Published on Mar 15, 2017
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PRESENTATION OUTLINE
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Have you ever wondered why "mini" volcanoes erupt?
Photo by NASA Goddard Photo and Video
Have you ever wondered why baking soda, and vinegar reacts?
Photo by VinothChandar
Get ready to learn the science behind chemical reactions!
Bubbly Drink
Photo by Steve Corey
Ingredients needed:
- Orange
- Baking Soda
- Glass
- Water
- Sugar
Why does it react like that?
- The bubbles are made from the reaction between the acid in the orange and the bicarbonate of soda. These bubbles are actually a gas, just like in soda.
Rubbery Egg
Photo by Doug Beckers
Ingredients Needed:
- A glass
- Vinegar
- An egg
Why does it react like that?
- An egg's shell is made up of calcium carbonate. When this reacts with the vinegar-it releases carbon-dioxide. When, the shell is dissolved, the inner membrane is exposed.
Untitled Slide
Corny Goo a.k.a. Quicksand
Ingredients Needed:
- Water
- Cornstarch
- Bowl
Why does it react like that?
- When you roll it, it feels like a solid. If you stop, it will act like a liquid. The cornstarch particles float in water. When you roll, the particles are forced together. When you stop rolling, the cornstarch and water particles separate again. It behaves like...
QUICKSAND!
Ingredients Needed (Glow in the Dark):
- Tonic Water
- Corn Flour
- Bowl
- UV Blacklight
Clean Money
Ingredients Needed:
- Coco Cola
- Dirty Coins
- Glass
Why does it react like that?
- The drink contains food acids. When this type of acid reacts with the dirt on the coins, it "cleans" them.
Coke and Salt Eruption
Ingredients Needed:
- Coca Cola
- Salt
Why does it react like that?
- When the salt goes into the bottle, it produces more carbon dioxide bubbles, causing all that fizz. In addition, when it starts to dissolve, the salt creates more bubbles, finally causing the eruption.
Chalk Talk
Ingredients Needed:
- Chalk
- Drinking Glass
- Vinegar
Why does it react like that?
- It is like the Rubbery Egg Expeirment. Chalk contains calcium carbonate. This mineral dissolves when it comes into contact with an acid like vinegar.
