Classify each of the following as a chemical or physical change:?

Question

ice cream melting

sugar dissolving in water

candle burning

bathroom mirror fogging up during a shower

milk turning sour

Answer 1

ice cream melting- physical change as wwhen u freeze liquid ice cream it turns back to ice cream.

sugar dissolving in water- chemical as once the sugar is dissolved ou have to use chemical meathods to get the sugar out from the water.

candle burning- chemical as when the candle is burning it orduces heat which cannot be got back if we rebuild the melted candle.

bathroom mirror fogging up during a shower- physical as you can wipe the fogg out and if you want it agun have a hot tub of hot water near the galss.

milk turning sour- chemical as you cannot use phusical methods to turn sour milk into milk.

hope it really helps!!!!!!!!!

Answer 2

when u think of physical/chemical change think of whether the change is permanent or it can be reversed with the simple procedures.
Ice cream melting -> you can keep the melted ice cream in deep freeze to get the ice cream in its original form. So it is physical.

Candle burning: U can not get the candle back once it is burnt. Don't say that I will grab some money from my dad's pocket and get a new one. Just kidding. Chemical

Bathroom mirror fogging: Hey open that silly window in the bathroom to get the fog out of the mirror's way. Physical

Milk turning sour: U can not turn the milk again in its original form by simple procedures coz. it has already been acted with enzymes from bacteria. Chemical

sugar in water: I don't know if u guys ever heard of things like decantation, filtration, crystallization. U can get the sugar back with the simple procedure. Physical

Answer 3

From what very little I know about these types of changes, a substance can go through a physical and chemical change depending upon the environment and other influences. When you add something to an object to change it it is influenced by you doing something physical, then there is a breakdown of it's chemical components. But if I had to be specific I would guess, and I use guess without studying beforehand, that all of them are chemical induced changes that create physical change. These again I stress are guesses. I have provided some references.

Answer 4

ice cream melting - physical
sugar dissolving - physical
candle burning - chemical
bathroom mirror - physical
milk - chemical

Answer 5

wow! i actually know the answer!

ice cream melting -physical

sugar dissolving -physical

candle burning -chemical

bathroom mirror -physical

milk turning sour -chemical

you really ought to learn how to do this yourself...

Answer 6

ice cream-physical
sugar-physical
candle-chemical
bathroom-physical
milk-chemical