Question

i)why ice is compressed under high pressure.what happens to it when the pressure is released?
ii)define (a)melting point (b)fusion
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Answer 1

Dry ice is in reality Carbon Dioxide, which has been converted into a solidified state by applying a great amount of pressure on it .

Therefore, when dry ice does not receive the pressure, or when the pressure is removed, then the state of dry ice changes to the state of gaseous carbon dioxide again.

Melting point:

the temperature at which a given solid will melt.

Fusion:

is the process of merging atoms together to create energy.

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Answer 2

Explanation:

i) ice is compressed under high pressure to convert it into water.

it will stop it's conversion.

ii)the point at which any substance starts melting is known as melting point of that substance.

b) when heat is provided to an object to change it into fluid and that heat will consumed by the fluid is known as fusion