Part 3: Let us make ice cream without fridge! (25
min)
- Explain the students that the reaction we are about to make is from
liquid to solid and we are going to speed it up with a catalyzer that
it is going to be de grain salt.
- For the reaction to be made we will freeze the juice to make it ice
cream that is why we need the ice for.
- Let’s start to put a lot of ice in the big metal bowl. Spread the ice
so that it covers all the bowl.
- Add a big amount of grant salt to the top of the ice. Explain the
reaction that is happening with the ice and the salt.
- Then cover up the ice and the salt with the other metal bowl seeing
upside up. Add the juice in the top metal bowl.
- Start spinning the top bowl with the juice inside 5 seconds to the
left and 5 seconds to de right while you spread it through the bowl
with a spoon. Repeat this for 20 min.
- Analyze the reaction that is forming and speeded up from the
catalyzer.
- For the final product put your ice cream in a cup with some help of a
spoon.