Ice Cream Science
What is the freezing point of water?
0°C or 32°F
What kind of glue is made from milk proteins?
Casein glue
What is the protein in milk used to make plastic?
Casein
What type of fluid is slime, which doesn't behave like a normal liquid?
Non-Newtonian fluid
What is acid rain?
Rain that contains acidic components like sulfuric or nitric acid
What is the name of the process when a liquid turns to a solid?
Freezing
What word means a solid forms from a liquid during a chemical reaction?
Precipitate
What word means the solid that forms when milk and vinegar mix?
Precipitate
What are polymers in slime?
Long chains of repeating molecules
What is dry deposition?
Acidic gases or particles that fall to the ground without rain
Why is salt used when making homemade ice cream?
It lowers the freezing point of the ice
What do we call the solid part of milk when it curdles?
Curd
What kitchen ingredient is added to hot milk to cause the casein to separate? What are monomers?
Vinegar
What is viscosity?
A measure of how thick or runny a liquid is
What layer of the atmosphere is damaged by pollution and affects air quality?
Ozone layer
Name two main ingredients in ice cream.
Milk, sugar and vainilla extract
What do we call the liquid part left after milk curdles?
Whey
What kind of plastic is formed from milk and is biodegradable?
Casein Plastic
What are monomers?
The building blocks of polymers
Name one way acid rain affects plants.
Damages leaves or changes soil chemistry
What do we call the process of lowering the freezing point of a liquid by adding a substance like salt?
Freezing point depression
What type of glues come from plants or animals?
Natural glues
Why doesn’t milk plastic decay quickly?
It is a type of bioplastic, but it’s more stable than fresh milk
Give two properties of slime.
Stretchy and gooey; flows under pressure
True or False: Ozone and acid rain are the same thing.
False