Calculate the quantity of heat in joules required to completely freeze 203. 5 points grams of H2O(l) at 0.°C.

I’m guessing you’re more alert to yourself or your surroundings if you’re more concentrated

Ibelieve your answer is true 

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.