By Density, boiling point and melting point
You can check by evaporating the liquid if something remains then the water is not pure.
We can get a pure solid from a liquid by freezing the solution.
If it is a pure rock.
To check if your gold is pure, you need to compare its weight to the weight of a known sample of pure gold. If the two weights are equal, then you can be confident that your gold is pure.
A theory is a set of principles or ideas used to explain a phenomenon, while a method is the approach or technique used to collect data or test a hypothesis related to that theory. Theories provide the conceptual framework, while methods provide the practical tools for research or analysis.
That refers to any method used to pay for something. Some of the options include cash, check, bank transfer, transfer via other institutions such as PayPal or Skrill.
The best method is fractional distillation.
The best method is chemical analysis.
Chromatography
it is also called LOTTERY METHOD
no
Adding impurities to a pure salt or applying a method of preparation which not lead to a pure salt.