because there is polarity of molecules in there
Chalk is calcium carbonate - CaCO3. Any chemical compound contain some impurities.
Chalk is Calcium Carbonate, aka CaCO3, so it's only one substance.
It's a pure substance because even though the atoms are different they still the same. If that makes sense?
When you put chalk in vinegar the chalk is dissolved and broken down. However, as a result of the mixture of compounds co2 is formed.
Primarily calcium carbonate, derived from the skeletons of very small ancient marine organisms.chalk is made up of calcium powder and calcium carbonate."Blackboard and sidewalk chalk were originally made from the sedimentary rock of the same name; a form of soft limestone. Chalk, composed principally of calcium carbonate (CaCO3), formed underwater by slow accumulation and compression of the calcite shells of single-celledcoccolithophores."
The chalk-like substance is, in fact, chalk.
Lime and chalk.
Chalk is calcium carbonate - CaCO3. Any chemical compound contain some impurities.
Billiards Chalk.
Chalk.
it is chalk
Chalk.
calcium carbonate
that substance is clorine
Calcium Carbonate, CaCO3.
vinegar
chalk