|What types of things are made up of elements?
||Everything is made up of elements or a combination of elements.
|Why is a combination of sugar and salt said to be a mixture?
||It is a combination of 2 substances, each of which retains its own properties when combined with the other.
|What are 3 types of lipids?
||fats, oils and phospholipids.
|What is equilibrium?
||when the relative number of molecules in a substance is equal in the two areas.
|Why do carrots in salt water become limp?
||There are fewer water molecules around the carrot cells than inside the carrot cells, water leaves the carrot and moves into the salt solution.
|Why do salty foods make you more thirsty?
||The salt present in the food causes water to leave your cells; the lost water needs to be replaced by the body.
|What must happen to food molecules for respiration to take place?
||they must be broken down into simpler substances and their stored energy released.
|Where in a cell does fermentation take place?
|What are 4 organic compounds?
||carbohydrates, proteins, lipids, nucleic acids