Analyze the temperature Vs time graph of water, given below, and answer the following questions. (i) Which region contains all liquids?
(ii) Which region contains all solids?
(iii) Which region contains all gases?
(iv) Which region contains both solid and liquid?
(v) Which region contains both liquid and gas?

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next