Cooking. Cooking. Most food has to be cooked before it is eaten. Which foods can be eaten raw?. Why does food have to be cooked?. Have a think. Write down your ideas in the form of a spidergram. to kill microbes. to improve the texture. to improve the taste.
Most food has to be cooked before it is eaten.
Which foods can be eaten raw?
Have a think.
Write down your ideas in the form of a spidergram.
to improve the texture
to improve the taste
Why does food have to be cooked?
to make it easier to digest
to improve the flavour
Do you recognise these different ways of cooking?
In each case write down the name of the method.
The food is cooked using electromagnetic radiation with a wavelength of about 1cm.
When heated, the cell walls of the potato cells break down. This makes the potato softer. Enzymes can now get to the starch inside the cell, so the potato is easier to digest.
When heated, the molecules in protein change shape. We say the protein has been denatured.
in making cakes.
This is a chemical change. The word equation is:
The test for carbon dioxide:
Carbon dioxide turns _____ water ______.