Cool Science Project #1 – Experiments To Do At Home On Halloween

November 4, 2013
proegghead

ALL EXPERIMENTS REQUIRE THE HELP OF PARENTS. ALL EXPERIMENTS REQUIRE THE HELP OF KIDS… PARENTS DO NOT DO THESE ALONE.

WITCHES BREW

The Science:

Dry ice is the solid form of carbon dioxide, which freezes at -109° Fahrenheit. Unlike a water ice cube, when dry ice is heated, it doesn’t melt into a liquid. It goes straight to a gas. When something goes straight from a solid to a gas, we call it sublimation. When you put dry ice in water, it heats up really fast and all those gas bubbles rise quickly in the water. They escape off into the air, making the water look like it’s smoking. Creepy!

Materials:

  • A bowl
  • Juice
  • Gloves (For Handling Dry Ice)
  • Dry Ice
  • A Serving Spoon

Directions:

  1. Pour juice into bowl
  2. Put on gloves and grab a piece of dry ice. Use a piece about the size of a fist to start – you can add more from there.
  3. Serve and enjoy!

Warning: DO NOT put dry ice in cup and drink it.

EDIBLE FAKE BLOOD

The Science:

The key behind making good fake blood is to get the viscosity just right. Viscosity is how fast or slowly a liquid moves. Viscous liquids move slowly, and non-viscous liquids move quickly. What determines the viscosity of a liquid is how tightly all the atoms inside of it are packed together. When they’re close together, they rub against each other a lot more. That friction makes the liquid flow slower.

Materials:

  • A bowl
  • Strawberry Syrup
  • Chocolate Syrup
  • A Spoon

Directions:

  1. Pour Strawberry syrup in a bowl
  2. Pour an equal amount of chocolate syrup in the same bowl
  3. Mix until you have a smooth color throughout
  4. Add more strawberry or chocolate syrup for desired color
  5. Pour it on fake hands or eat it!

EYEBALL SLIME

The Science:

Slime is something called a polymer. A polymer is a string of molecules connected together in a really long chain. When the molecules inside a polymer are connected in a lot of places, they don’t have as much room to move and the polymer is stiffer. When the molecules aren’t connected in as many places, the polymer is stretchier, like slime

Materials:

  • Borax
  • Clear Non-Toxic Craft Glue (Elmers or Tacky works)
  • Food Coloring
  • Water
  • 2 Small Containers for mixing
  • 1 Large bowl to combine mixtures

Directions:

  1. Mix 1 Teaspoon of Borax in one cup of water
  2. Stir until the Borax is completely dissolved
  3. Separately, mix 4 oz of clear glue with 1/2 cup of water
  4. Add food coloring to glue and water mixture for color
  5. Pour both solutions into a larger bowl and mix
  6. The chemical reaction be start immediately
  7. Keep mixing until no more change seems to be happening
  8. Play with slime!

ZOMBIE BRAINS

The Science:

Inside tonic water, there’s a special chemical called quinine. When ultraviolet light from a black-light shines on the tonic water, it gets absorbed by tiny little electrons inside the quinine. They absorb that light for just a second, take some of it away, and then let go of the rest. When you take a little energy away from ultraviolet light, it becomes visible blue light. That’s why you see the tonic water glowing blue.

Materials:

  • Tonic Water
  • Stove Top with Pot (To Boil Tonic)
  • Jello Powder (Any Color)
  • Bowl to Mix and Cool Jello

Directions:

  1. Boil tonic water
  2. Pour boiled tonic water and Jello powder in a bowl (Make sure to use a bowl that wont melt with hot water)
  3. Stir together until the powder is dissolved in the tonic water
  4. Let cool and refrigerate
  5. Serve under black-light to see it glow!

For more cool science projects, check out our Cool Science Projects page.

 

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