The sun works well for me.
polystyrene
A metal cup
sodium acetate water pan
Benzoin is slightly polar, and water is polar. Therefore, benzoin is slightly soluble in water.
your mom and your dad in bed
polystyrene
PEX pipe will keep it hot longer than copper.
A metal cup
use insulation to keep the water hot for 40 minutes
No, paper will not keep water cold for the longest time. A metal cup will keep water the same temperature for the longest time. I know this because I did a science experiment about this but instead of cold water I used hot, which won't really make a difference. The next would be glass then paper.
Because metal absorbs and conducts more heat then most other substances so it keeps it hot. Just like when you cook, you use metal pans because they conduct the most heat.
keep it in a hot place
Hot and cold water and a freezer and a timer or stopwatch
No, It doesn't. If you want to keep hot water hot for a longer time use a polystirene cup.
not sure but i think styrofoam or thermocol
Metal Cups will keep it the Warmest, for the longest amount of time.
thaw it under the sink with hot water. then keep it in a bucket of hot water