The solubility of solid materials increase when the temperature increase; it is a general rule.
depends on size. small amounts dissolve faster than big amounts
You could grind it into very fine crystals.
Heat the water to boiling point, then put the rock sugar in
An acid will dissolve something faster.
No, the lower the pressure the less gas a liquid can hold and the longer it takes to dissolve. One example you may have seen is water boiling in a near vacuum at room temperature.
Much faster in boiling water.
depends on size. small amounts dissolve faster than big amounts
You could grind it into very fine crystals.
it only takes about 3 minutes to dissolve sugar in hot to boiling water. When it could take about a hour for cold water.
More than likely because boiling is much hotter than just warm and when things are hot then dissolve whats around them and since boiling is hotter than warm it dissolves faster. That's just my theory.
The answer depends on the temperature of both water. But salt would dissolve faster in boiling water than it could in carbonated water at room temperature.
Heat the water to boiling point, then put the rock sugar in
solute dissolves more rapidly in hot water
Not all solids dissolve faster in acids.
An acid will dissolve something faster.
Sugar should dissolve faster in a liquid.
No, the lower the pressure the less gas a liquid can hold and the longer it takes to dissolve. One example you may have seen is water boiling in a near vacuum at room temperature.