Chalk is made out of Calcium Sulphate and it dissolves in weak acids which means it is a weak chemical to acids. So the vinegar wich is a typr of an acid dissolves the chalk with cool foams foaming in the jug or a cup.
because of the acid in the vinegar
EDIT(Dr.J.): Actually, chalk is mostly calcium carbonate, not calcium sulphate. The carbonate reacts with acetic acid (vinegar) to create CO2 and H2O as follows:
CaCO3 + 2CH3COOH ==> Ca(CH3COO)2 + 2H2CO3 ==> 2CO2 + 2H2O
It acually matters on how big the chalk is. If it's small, it will erode away slowly. Ask again with a measurment next time.
add. But your blackboard chalk may not dissolve at all, for it is possibly made of CaSO4, not CaCO3.
Only completely in lemon juice, a tiny bit in vinegar, and not at all in water.
Chalk is made of calcium carbonate, meaning it eventually will dissolve in vinegar.
Yes chalk does dissolve in vinegar
because in most liquid it want dissolve
Yes
No
If under enough pressure all gases can dissolve in liquids. :D
For example polar liquids dissolve polar solids, nonpolar liquids dissolve nonpolar solids.
No glue that I know of can dissolve chalk.
Rather badly.
Calcium carbonate is insoluble in water.
In order to dissolve chalk in water, vinegar needs to be added. The vinegar has acid in it that eats away at the chalk to dissolve it.
No, Coca-Cola will not dissolve hair!! How do i know this? Well, I actually just did my Science Fair Project to see if hair will dissolve in certain liquids and coca-cola was one of my liquids. the Coca-Cola only changed the color of the hair but it did not dissolve it. Bleach will dissolve it in a matter of hours!!
Yes lemon juice can dissolve chalk and other things like the enamel on your teeth
No! its insoluble
yes they can but it depends on the liquids
insoulble
If under enough pressure all gases can dissolve in liquids. :D
For example polar liquids dissolve polar solids, nonpolar liquids dissolve nonpolar solids.
No glue that I know of can dissolve chalk.
yes, u can test this by putting the chalk in water
because it can break easily !
When chalk (the mineral) dissolves in water, it's called "limewater".