DIY Type: DIY

Write your own secret message in an invisible ink solution. The lemon juice is an organic substance which reacts with oxygen in the surrounding air, oxidizes and turns brown. By…

Create multi-colored flowers. Plants need a transport system to move food, water and minerals around. There are two things that combine to move water through plants – transpiration and cohesion.…

Create a big soapy marshmallow out of Ivory soap®. Ivory soap® floats because it has air pumped into it during manufacturing. When the air inside the soap heats up, the…

Make your own lava lamp. Oil is hydrophobic – it will not mix with water – even if you try to really shake the bottle. The Alka-Seltzer® tablet reacts with…

Make raisins dance up and down in a glass of soda. Raisins have a higher density than the liquid in the glass, so they sink to the bottom. Carbon dioxide…

Move pepper away from you without touching it. Water normally bulges up a bit. You can see this by looking at a raindrop or by filling a glass slightly over…

Create your own invisible fire extinguisher. The mixture of baking soda and vinegar creates carbon dioxide. CO2 is heaver than air so it sits at the bottom of the glass.…

Make a paper clip float on water. The paper clip is held afloat by the surface tension of the water. Water molecules are polar, so the molecules pull on each…

Make a barometer and predict the weather. As the air is sealed inside the jar, any changes to the air pressure outside the jar will result in direct movement of…

Measure the speed of light using chocolate and a microwave oven. Microwaves work by creating standing waves inside the microwave oven. The water molecules in the chocolate try to align…