Chemistry Quiz

(a) (ii) solid pattern: regular / lattice

(a) (iii) distance: close

(b) particles have more energy / move faster; collide harder / collide more frequently / more collisions / collide with more force; allow: molecules instead of particles

(a) (i) 6e between two nitrogen atoms; note: can be any combination of dots or crosses

(c) (i) nitrogen has smaller M_r; nitrogen (molecules) move faster (than chlorine molecules) / ora; note: comparison must be made

(c) (ii) (at higher temperature) molecules move faster / have more energy

(2) (a) (i) NH3 + HCl → NH4Cl;

(2) (a) (ii) di

(2) (a) (iii) solid forms at: A; explanation: ammonia molecules / particles have a smaller mass; (and so) move / diffuse faster;

(2) (a) (iv) solid forms in less time / faster / quicker; particles / molecules have more energy; (and so) move faster / diffuse faster;