Question

List five characteristics by which compounds can be distinguish from elements

Answer 1

(i) Compounds are pure substances while mixtures are impure substances.

(ii) Compounds can not be separated by physical process while mixtures can be separated.

(iii) Compounds shows different properties from its constituents while mixture retains the properties of its constituents.

(iv) Compounds have fixed composition while mixtures composition are variable.

(v) Compounds have fixed melting or boiling points while mixture don't have fixed melting or boiling points.

Answer 2

Answer:

1) Compounds are the group of element while the elements are the group of atoms.

2)There are nearly 118 elements discovered and there are endless compounds

3)Compounds are classified according to their bonds while the elements are classified as metals , nonmetallic and metalloids.

4)Compounds are represented by there chemical formula while the elements are represented by the names and numbers.

5)Compounds can easily be separated by the chemical reaction while the elements cannot be separated by the chemical