Question

Pure

Substances

Appearance

(Homogeneous

or

Heterogeneous)

Separating

Techniques

(Components

can be

separated or

inseparable)

Boiling point

(Fixed

temperature or

temperature

different in

different times)

Melting point

(Melts

completely and

smoothly or a

portion does not

melt)

1.

2.

3.

4.

5.​

Answer 1

can be seperated if sand paper is rub on them to remove oxide layer.

boiling point is acc. to their properties temperature too