Science Corner

Homemade Lava Lamp

Tools:

  • Clear glass or plastic bottle
  • Water
  • Food coloring
  • Vitamic C tablet
  • Vegetable oil
  • Flashlight

Steps:

  1. Pour water into the bottle until it fills quarter part of the bottle
  2. Pour vegetable oil into the bottle until full
  3. Put five drops of food coloring into the bottle
  4. Put vitamic C tablet into the bottle
  5. Turn the flashlight on, and light the bottle
  6. See the effect! Amazing, isn’t it?

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How can it happen?
When we pour vegetable oil into the bottle that has been filled with water before, we can already see the separation between oil and water. This happens because of the density difference between water and oil, causing them can’t mix into one.

Then, when the vitamin C tablet is put into the bottle, it will react as it meets water, oil, and food coloring, resulting in it producing carbon dioxide bubbles that make the water below will come up, and when it reaches the top of the bottle, the carbon dioxide will be released into the air, making the water fall down to the bottom. This is the example of acid-alkali reaction.

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By: Clevaria Ery Swandari

Charging Your Phone with Fruit? Of Course You Can!

Steps:

  1. Prepare an apple, USB data cable, and a phone
  2. Plug the USB data cable into your phone
  3. Plug and push the other cable tip to the apple until it gets dipped into the apple’s flesh
  4. Tada! Your phone is charging!

How can it possible?
When we plug copper plate and zinc plate into the apple and connect the, with a cable, electric currents occurs and flows from copper plate to zinc plate, which means that the circuit generates electricity. Inside the apple, there’s an acid liquid that function as electrolyte. When both copper and zinc plates are plugged into the apple, the chemical reaction occurs and generates electricity

With-Enough-Oranges-You-Can-Charge-Your-iPhone-Anywhere-2One apple can produce weak electric current. For gaining bigger electric current, we need more apples arranged into serial circuits. Zinc plate plugged into the first apple is connected to copper plate plugged into the second apple. Zinc apple plugged into second apple is connected to copper plate plugged into the third apple, and so on.

By: Clevaria Ery Swandari