the solid particles take up the intermolecular spaces in the liquid.
I think the correct answer would be C. The expression that would best represent a second order rate law would be r =k[X][Y]. Reaction with this rate law are those that depend on the concentration of two first order reactants or a second order reactant.
The periodic table increases as you read left to right so it is A.
No. bacteria only needs food to live along with other special needs depending on the type of bacteria