للتواصل
(1)
Because it can be separated by magnet
(2)
Because iron is magnetic substance while copper non-magnetic
(3)
Because white reflect all colors while black absorb all colors
(4)
Due to the refraction of light in water drops of rain
(5)
To hide from enemies
(6)
Due to light refraction
(7)
To fare their enemies
(8)
Water evaporate, and salt remain
(9)
Sugar will dissolve in water
(10)
A homogenous mixture is formed
(11)
It will be split into seven colors
