Dancing Raisins Dyson Science DIY Project

Dancing Raisins

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 bubbles attach themselves to the raisins increasing their volume while adding very little to their mass. With greater volume, the raisin displaces more fluid. This causes the water to exert greater buoyant force, pushing the raisins upwards. Once the raisins reach the top of the glass the carbon dioxide escapes and the raisins sink again.

Ingredients:

  • A can of clear soda (e.g. lemon-lime)
  • A tall, clear glass
  • A handful of raisins

STEP 1

Pour the can of soda into the tall glass.

STEP 2

Notice the bubbles coming up from the bottom of the glass. The bubbles are carbon dioxide gas released from the liquid.

STEP 3

Drop a few raisins into the glass. Watch the raisins for a few seconds. Describe what is happening to the raisins.

STEP 4

Do they sink or float? Keep watching, what happens?

DIY Details

Source

Avg. Duration

2 hours

Get Abakcus straight to your inbox

Recommend this DIY

Share on facebook
Share on twitter
Share on linkedin
Share on whatsapp

Similar DIY's

Invisible Ink Dyson Science DIY Project

Invisible Ink

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…
Colared Carnations Dyson Science DIY Project

Colared Carnations

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.…
Ivory Soap Dyson Science DIY Project

Ivory Soap

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…
Scared Pepper Dyson Science DIY Project

Scared Pepper

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…
Fire Extinguisher Dyson Science DIY Project

Fire Extinguisher

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.…
Weather Balloon Dyson Science DIY Project

Weather Balloon

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…
Send this to a friend