Three items that will change the solubility of a solute into a solvent are:
1. Temperature - increasing temperature typically increases the solubility of solids in liquids, but can decrease the solubility of gases in liquids.
2. Pressure - increasing pressure can increase the solubility of gases in liquids.
3. Polarity - solutes that have similar polarity to the solvent are more likely to dissolve.
Three ways to increase the speed with which a solute dissolves are:
1. Stirring or agitating the solution to increase the surface area of the solute in contact with the solvent.
2. Increasing the temperature of the solvent, which can increase the kinetic energy of the solvent molecules and the solute particles, leading to more frequent collisions and faster dissolution.
3. Grinding or crushing the solute to decrease the particle size and increase the surface area in contact with the solvent.