At what tempature does ice melt into water

0 °C.

Explanation:

The melting point of ice (or the freezing point of water) is 0 °C, assuming the ice does not have any impurities whatsoever. The presence of impurities will cause the melting point to be a bit lower than 0 °C.

The scale of Celcius degrees makes it so that water freezes at 0 °C and boils at 100 °C.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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