Question

substances have specific characteristics called chemical properties, which are unique to each substance. for example, water freezes at and boils at 100°c. these temperatures are known as points of change because they mark when water changes from one state to another. when energy is added to ice, the move faster and get more excited. eventually, the solid ice turns into a —this is called the point. on the other hand, if enough is taken away, liquid water turns back into a solid. this is called the point. have you ever noticed how everything outside might be wet in the morning but dry by the afternoon? that happens because the sun adds energy, making the water molecules move faster and break apart into a. this happens when the water reaches its.

Explanation:

Step1: Fill in freezing - point temperature

Water freezes at $0^{\circ}C$.

Step2: Fill in what moves in ice

In ice, the molecules move.

Step3: Fill in state when ice melts

When ice melts, it turns into a liquid. This is the melting - point.

Step4: Fill in what is taken away for liquid to solidify

Energy is taken away for liquid water to turn back into a solid (freezing - point).

Step5: Fill in state when water evaporates

When water reaches its boiling - point, water molecules move faster and break apart into a gas.

Answer:

$0^{\circ}C$; Molecules; liquid; Melting; Energy; gas; Boiling Point