Question: What will happen if we mix raisins and ginger beer?
Hypothesis - We predict that these things could happen:
- It could produce a gas
- The raisins might dissolve
- The ginger beer will fizz up and form a gas
- Raisins might blend into ginger beer so that you can't see them
- It might make the raisins taste bad
- There will be a raisin explosion
- The raisins might shrink
- The ginger beer might change colour
- The raisins could float
- It might make a yummy drink
- The raisins might expand
- It could create a new substance
Equipment/Materials:
- clear glass container
- ginger beer
- 5 raisins
Method
1) Fill the container with ginger beer.
2) Drop the raisins into the ginger beer.
3) Watch what happens!
Hypothesis - We predict that these things could happen:
- It could produce a gas
- The raisins might dissolve
- The ginger beer will fizz up and form a gas
- Raisins might blend into ginger beer so that you can't see them
- It might make the raisins taste bad
- There will be a raisin explosion
- The raisins might shrink
- The ginger beer might change colour
- The raisins could float
- It might make a yummy drink
- The raisins might expand
- It could create a new substance
Equipment/Materials:
- clear glass container
- ginger beer
- 5 raisins
Method
1) Fill the container with ginger beer.
2) Drop the raisins into the ginger beer.
3) Watch what happens!
Why does this happen?
Carbon dioxide is dissolved in soft drinks and gives them their fizz. The raisins are denser than the liquid so at the start they sink to the bottom of the container. The fizzy drink releases carbon dioxide bubbles and these bubbles stick to the rough surface of the raisin. The bubbles act as a life jacket and lift the raisin to the surface. When the raisin reaches the surface the bubbles pop and the gas escapes into the air. This causes the raisin to sink.
The rising and sinking of the raisins continues until most of the carbon dioxide has escaped and the fizz goes flat.
Carbon dioxide is dissolved in soft drinks and gives them their fizz. The raisins are denser than the liquid so at the start they sink to the bottom of the container. The fizzy drink releases carbon dioxide bubbles and these bubbles stick to the rough surface of the raisin. The bubbles act as a life jacket and lift the raisin to the surface. When the raisin reaches the surface the bubbles pop and the gas escapes into the air. This causes the raisin to sink.
The rising and sinking of the raisins continues until most of the carbon dioxide has escaped and the fizz goes flat.