The metal extracted from limestone, marble and chalk is :
Marble and chalk or two forms of calcium carbonate. Equal masses of marble lumps and powdered Chalk are added to dilute hydrochloric acid.
The marble takes longer than the chalk to fully react. Why is this so?
(a) marble is more reactive than chalk
(b) marble is more soluble than Chalk
(c) The Marble has the smaller surface area than chalk.
(d) The marble is more basic than chalk.
Chalk and limestone are examples of ______.
Chalk and limestone are made up of the remains of animals. They are: