Which activity will NOT cause an increase in reaction rate?
catalyst
inhibitor
surface area
temperature

Inhibitor

Explanation:

Inhibitors generally slow down a reaction rate and prevent the particles from reacting with each other.

It's not the others because:

Catalysts work by lowering the activation energy, which in turn increases the reaction rate as more particles have enough energy to react.

Surface area allows for particles in the reaction to collide more often with each other, which increases the reaction rate.

Temperature increases the speed of particles in the reaction, causing particles to collide more often with each other and therefore increasing the reaction rate.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6