A slow chemical reaction will have... O a low activation energy
O a high activation energy
O a high temperature
O a high concentration of reactants

Ay high concentration of reactants

Explanation:

To slow down a reaction, you need to do the opposite. Factors that can affect rates of reactions include surface area, temperature, concentration, and the presence of catalysts and inhibitors. ... Concentration - another way to increase the rate of a chemical reaction is to increase the concentration of the reactants.

a) the particles of the chair are strongly held together.