Can you use table salt instead of rock salt in your ice cream machine?
Yes most people interchange both quite often. But you could possibly even add the same amount of both into the one ice cream machine.
I need an exact answer for an assignment does table salt or rock salt produce a greater freezing point depression?
Are you saying that table salt will not work when making homemade ice cream and is there another substitute?
Table salt (mixed with the ice) works just fine to freeze the ice cream mixture. There are other salts that can make the temperature colder, but they are not necessary and are usually more expensive than table salt. "Rock salt" is large grained version of table salt, it will usually keep the mixture cold a bit linger, but it will not be colder.
Table salt has more artificial chemicals then natural rock salt. This really has nothing to do with it since the salt is never in contact with the ice cream. While rock salt is ideal, you can use table salt if needed. You can also make your own rock salt by heating some water, then dissolving as much salt in it as allowed. Heat the water until boiled. When the boiling water has become a saturated…
Most building supply or garden supply stores. In the USA, Lowes or Home Depot might be conveniently located for you. Rock salt is often used in water softeners. In northern climates, rock salt is sometimes used to melt ice on roadways or driveways. However, if you're making ice cream, ANY salt will do; regular table salt or "kosher salt" will work as well, although it is more expensive than rock salt.