IRREVERSIBLE
When you mix chalk with water and then evaporate the water, you are left with chalk dust or solid chalk residue. Evaporating the water removes the liquid component, leaving behind the solid chalk particles that were initially dissolved in the water.
Chalk doesn't react with pure water.
Chalk will not dissolve in Sprite because chalk is made mostly of calcium carbonate which is not soluble in water. The chalk will remain solid and will not mix with the liquid.
A foil does not separate chalk, sugar, and water because these substances are all able to mix and dissolve in water. Chalk is insoluble in water but sugar is soluble, so both can dissolve into the water without being separated by the foil barrier.
To fix a mixture of 1 part water to 3 parts chalk, you could add more chalk to thicken the mixture and balance out the excess water. Gradually add small amounts of chalk while stirring until you reach the desired consistency. Alternatively, you could increase the overall quantity of the mixture by adding more chalk and water in the appropriate ratio to achieve the desired result.
To separate salt from chalk, you can dissolve the mixture in water. Salt is soluble in water while chalk is not. After dissolving, you can filter the mixture to separate the insoluble chalk from the salt solution. By evaporating the water from the salt solution, you can obtain the salt crystals.
a gas attack and you could easily die
It is unlikely that mixing chalk and water would turn the liquid orange. Chalk is mostly composed of calcium carbonate, which is white in color. Perhaps something else was added to the mixture that caused the color change.
If you have added too much water to your mix just add more sand and cement ;but do this right away.
Water is the solvent and chalk is the solute.
Use cold water to mix and ensure you mix the powder with water violently so as to ensure there is as little air in the mix as possible. Otherwise its difficult to change properties of a material to your advantage.
When you mix chalk with club soda, the carbonation in the soda can cause the chalk to dissolve slowly. This reaction occurs as the carbon dioxide in the club soda creates carbonic acid, which reacts with the calcium carbonate in chalk to form calcium bicarbonate.