Four properties of water are listed.
1. it is colorless and odorless in its pure form.
2. it reacts with metals to form metal hydroxide and hydrogen gas.
3. when heated to 100 °c, water evaporates.
4. it decomposes to form hydrogen and oxygen.
which are the physical properties of water?

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

What is i fracture in the crust called when land move up, down or sideways

How have the greenhouse gasses increased from the year 2000 to 2018