Answer:
1.) salt is soluble if it dissolves in water to give a solution with a concentration of at least 0.1 moles per liter at room temperature. A salt is insoluble if the concentration of an aqueous solution is less than 0.001 M at room temperature.
2.) melts at 80°C, boils at 218°C, and sublimes upon heating. It is insoluble in water, somewhat soluble in ethanol, soluble in benzene, and very soluble in ether, chloroform, or carbon disulfide. Naphthalene is obtained from coal tar, a byproduct of the coking of coal.
3.) Solubility is the ability of a solid, liquid, or gaseous chemical substance (referred to as the solute) to dissolve in solvent
4.) Crushed ice will melt faster than solid ice. ... The ice takes energy away from the liquid around it, making the liquid colder. The energy flows out everywhere where the water touches the ice. So that means that if more ice touches the water, then more of it will be able to melt
5.) Stirring affects how quickly a solute dissolves in a solvent, but has no effect on how much solute will dissolve. ... Stirring simply moves the solvent molecules around, allowing them to interact with the solid pieces of undissolved solute and transporting the dissolved solute away into the bulk of the solution
6.) The kind of salt we eat dissolve more quickly in room temperature water than in cold water. That is because at room temperature, the tiny particles that make up the water and salt move around and vibrate at higher speeds.
