Experiments & Activities

Enjoy a collection of fun science experiments and activities YOU can do and make learning come alive at home. Check back periodically, and make sure to follow us on Facebook!


FEATURED EXPERIMENT — POP ROCKS EXPERIMENT

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Make this candy a fizzy eruption!

MATERIALS:

  • Small cups (8oz or less)
  • Water
  • Pop Rocks
  • Lemon Juice (about 1/8 of a cup)
  • Baking Soda (less than a tablespoon)
  • Towels
  • Spoon

STEPS:

  • Put some water into your cup.  Add the pop rocks.  They will start to pop.
  • Next add in the baking soda.  You may have to stir it a little to dissolve.
  • Finally add in the lemon juice.  The mixture should start to fizz and erupt from the cup!

HOW DOES IT WORK?:

Pop rocks candy “pops”  because of the CO2 contained inside of them that is released when mixing the candy with water.

The baking soda (sodium bicarbonate) reacts with the contained CO2 as well to rapidly expand and rise.  The lemon juice, which contains citric acid, breaks down this process to cause the “fizz”.

From www.poprockscandy.com

Magic Milk
Create unique patterns of color with a few common ingredients.

MATERIALS:

  • Shallow dish
  • Milk (2% , whole, or half and half work best)
  • Food coloring
  • Cotton swabs
  • Dish detergent

STEPS:

  • Put some milk in the shallow dish, completely covering the bottom.
  • Add a few drops of food coloring to the middle of the dish of milk, being careful not to mix it with the milk.
  • Put a little dish soap on the end of a cotton swab.
  • Touch the non dish soap-covered end of the cotton swab to one of the spots of food coloring in the dish. What happens?
  • Now touch the dish soap – covered end of the cotton swab to one of the spots of food coloring in the dish. What happens?

HOW DOES IT WORK?

The dish detergent contains phosphates and enzymes that react with the vitamins, minerals, and fats in the milk.  These reactions cause the food coloring to get pushed around the dish in the colorful patterns you see.  Since the soap is reacting with the fats in the milk, it is best not to use skim milk with this activity.

From www.chemistry.learnhub.com


Bubbling Lava Lamp

Create a bubbling reaction that looks like a real lava lamp!

MATERIALS:

  • Plastic Soda Bottles
  • Vegetable Oil
  • Food Coloring
  • Alka-Seltzer Tablets
  • Large Flashlights
  • Water

STEPS:

  • Fill the bottle ¾ full with vegetable oil
  • Fill the rest of the bottle with water
  • Add ten drops of food coloring (the food coloring will only color the water, not the oil)
  • Divide the Alka-Seltzer into 4 pieces
  • Drop one of the tiny pieces of Alka-Seltzer into the bottle.
  • When the bubbling stops, add another chunk of Alka-Seltzer
  • When all the Alka-Seltzer is gone and the bubbling has completely stopped, screw on the bottle cap

HOW DOES IT WORK?

Water and oil do not mix together, because water is a polar molecule and oil is a nonpolar molecule. Alka-Seltzer reacts with the water to make tiny bubbles of Carbon Dioxide and they attach to the colored water.  The bubbles rise to the top and pop.  The color blob then sinks down to the bottom. This keeps going until the Alka-Seltzer is gone.

From www.weirdsciencekids.com

Additional Information for Educators

Make Your Own Rock Candy
pH Tester
Singing Balloons
Sink or Float?
Volcanoes
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