Question

Please answer this and explain why :)

Answer 1

Answer:

C

Explanation:

The answer is C because burning sugar gives off a physical reaction. the sugar would just look burnt. The rusting of steel isn't chemical either since it is still steel and the only change is that it has changed the way it looks. Measuring the freezing point is also a physical change be because in the end, it's just going to be frozen salt water so that leaves you with C because you have completely made something entirely new.

Answer 2

Answer:

the answer is d

Explanation:

in all the other situations, the chemical make of the substances changes but in the last one, you're just freezing salt water. Freezing something is a physical change because the chemical formula of the substance doesn't change.