A large bottle with a siphon made of glass tubing .Compare the times taken to empty the bottle when it filled with water and then with petrol of specific gravity 0.8.use the viscosity of water and petrol to be 0.001 Pa. s and 0.002Pa. s respectively

no simpler subs form complex ones. synthesise = make

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.