Why water doesn't have definite shape?

What is the difference between farm and farmland? What kind of decay is it when a nuclear reaction in which a neutron is transformed into a proton and in electron? What are the elements are in the first group have 2 outer shell electrons and are also very reactive? Will 14-2 wire push 15 amps at 80ft? How much is 5 m in mm? Why tropical rain forests are found near earths equator but not near the north pole? When you heat a pan of water water particles that are heated first spread out more than the cooler water particles around them? What is 300 mm in meters? What happens when aso titer is low? What will happen if metals are exposed to water and air? Where is sphalerite found in the world? How does the air move in a room with a fire? What is the summary of the poem Rainforest Song by Tony Mitton? How many electric wires can be pulled through a 1 inch hole if you are using 12-2wire 12-3 wire or 14-2 wire? Why is it important to check the chemical levels when cleaning the dish machine? What do you call a person with no sex organs? What is the use of U-tube in a laboratory? How big is a star compared to the earth? In which type of rocks can quartz be found? What flies always but remains at the same place?

Why water doesn't have definite shape?