Question

. (a) Define chromatography and give its one application.

(b) Give two points of differences between an element and a compound​

Answer 1

Answer:

a)Chromatography is a powerful separation tool that is used in all branches of science, and is often the only means of separating components from complex mixtures. ... A wide range of chromatographic procedures makes use of differences in size, binding affinities, charge, and other properties.

b)An element is a material that consists of a single type of atom. Each atom type contains the same number of protons. Chemical bonds link elements together to form more complex molecules called compounds. A compound consists of two or more types of elements held together by covalent or ionic bonds.

Answer 2

Answer:

(a) Chromatography :- A process in which a chemical mixture carried by a liquid or gas is separated into components as a result of differential distribution of the solutes as they flow around or over a stationary liquid or solid phase.

One Application is:-

Chromatography plays a vital role in the chemical industry for the testing of water samples for purity.

(b) Two points of differences are:-

Elements -

1. It consists of only one kind of atom
2. It cannot be broken down into two or more simpler substances by any physical or Chemical processes

Compounds -

1. It consists of Two Or more elements that are chemically combined in a fixed proportion.
2. The components of a Compound can be seperated by chemical or Electrochemical means