4. Write your observation and conclusion for the following:
(a) When few marbles are put in a glass half
filled with water.
(b) Ice is kept at room temperature.​

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves