Why does conduction occur in solids and liquids easier compared to gases?
because the particles in gases are closer together and move slower

because the particles in gases are farther apart and move faster.

because the particles in gases are closer together and move faster.

because the particles in gases rarely move.

In saturated organic compounds, all the bonds between carbon atoms are called?

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

Which is an example of a reversible physical change?