The heat energy in the milk had to be removed in order to change the phase of milk.
The ice, the milk, the salt, the air in the baggie, the heat from your hands. The milk is the best source of heat energy for the melting process because it is a liquid and stores more energy for the phase change than the air or salt do. Your hands do not touch enough area to be effective sources of heat. ~*~
well i think they are a chemical change as you can not reverse it- a physical change is basically a change that can not be reversed :) hope this helps!
The total volume of milk does not change, but the volume of milk in the carton decreases and the volume of milk in the bowl increases.
Yes, milk turning sour is a chemical change.
Milk spoiling is a chemical change because certain chemicals in the milk are converted. Among these changes sugars in the milk become lactic acid.
The heat energy in the milk had to be removed in order to change the phase of milk.
Standardisation is when cream is removed from the milk and then added back to a specific butterfat. For instance - cream is first removed, leaving skim milk and cream. The cream is then added back into the milk phase to 2.0% to give low fat milk. The rest of the cream is used for cream or butter.
Water is removed from fresh milk to make dried milk.
The proteins that milk contains are a colloidal dispersion, which means they are dispersed in a liquid. Milk's butterfat globules disperse with a solution that is water-based.
Milk with most of the fat removed is called Skim Milk(sometimes called Skimmed Milk.)
The ice, the milk, the salt, the air in the baggie, the heat from your hands. The milk is the best source of heat energy for the melting process because it is a liquid and stores more energy for the phase change than the air or salt do. Your hands do not touch enough area to be effective sources of heat. ~*~
what happened to the heat energy that left the milk
Toned milk or double toned milk is the milk that has had the fat removed and then mixed with fresh milk. The fat is then removed a second time. To do this at home, skim the aft from milk, and then mix the skim milk with fresh milk to repeat the process. This is a choice milk because milk fat takes up a lot of the contents of milk. When the fat is removed, there is more room for the other nutrients. Toned milk has double the nutrients of regular milk.
Lactaid milk is milk that has had the lactose, milk sugar, removed. Some people cannot digest lactose so they have to drink milk without lactose if they want to drink milk.
Evaporated Milk
Whole milk is (usually) milk from a cow that has been cooled, but has not had any cream content removed. The main choices are: whole milk (full cream), semi-skimmed milk (half the cream removed), and skimmed milk (practically all the cream removed). Whole milk is recommended for children, who need the fat and calcium, for bone structure.
no, homogenized milk does not have the fat removed.