What does these two changes have in common?snowflakes forming in a clouddry ice sublimating and become a gas

they begin to vibrate harder causing the material that was solid to turn into a liquid i.e gallium or ice

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.

hypostyle hall;