Which of the following increases the chance of a reaction when two
molecules collide?
o
a. increasing the concentration of the molecules
o
b. increasing the activation energy of the reaction
o
c. decreasing the temperature of the system
o
d. slowing down the speed of the molecules

C. Decreasing the temperature of the system.

Explanation:

Decreasing the temperature of the system increases the chance of a reaction when two  molecules collide.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.