1. Add milk in a bag 2. Put bag in a box 3. Put ice on top of the bag 4. Add salt on top 5. Make it be semi-solid 6. Add topping in the bag 7. Repeat 2.- 4. again and finish. Questions 1) Why do we add salt to the ice?
Ans. Salt makes exotherm.
2) Why do we add the cookies and other things, only after the milk has frozen slightly?
Ans. If you add before freezing, milk will soak topping.
3) What are two factors that affect the freezing you think?
Ans. The temperature of milk and Temperature of Ice.
The industry made carbon dioxide in the air then if you have many carbon dioxide will make global warming.The global warming is a cause of acid rain. Acid rain will destroy the building and so many things in society.When you want to make energy from coal, it will create air pollution to place that nearby you.
In this year, I did so many things in Kru Gary class. Kru Gary taught me about science in this year. He is my favourite science teacher. Next year, I will study harder for science to be a medical doctor in the future like my dad. This year Kru Gary's class always fun. I love this class. I want Kru Gary to teach me in next year. He made me like this subject. His fantastic word is "No pressure". He always says that in every class.