No. The clay used for bricks is not a pure substance.
No. Minerals have definite chemical structures, but not rocks.
the answer is Chemical
Items like H2O and CoC2 have a definite chemical composition, and require exact amount of particles to forma reaction. However; particles which are soluble in water do not have a definite chemical reaction.
A mineral always contains certain elements in definite proportions.
it means a naturally-occaring, inorganic solid that has a crystal structure and a definite chemical composition
No, Brick does not have a definite chemical composition.
Minerals have a definite chemical composition, are solid, are inorganic, are naturally occurring, and have a crystalline structure.
A constant composition of a chemical compound.
No. Minerals have definite chemical structures, but not rocks.
Atom
the answer is Chemical
a chemical substance
Yes
Chemical
reactivity to acids
A definite chemical composition