Question

fill in the blanks to formulate hypotheses to both parts of the lesson question - what is the effect of temperature on reaction rate, and what is the effect of a reactants particle size on reaction rate? hypothesis 1 (temperature): if you increase the temperature of a reaction, then the reaction rate will dropdown because particles experience dropdown at higher temperatures. done

Explanation:

In chemical kinetics (part of Chemistry, a Natural Science subfield), increasing temperature gives particles more kinetic energy, so they move faster and collide more frequently and with more energy, increasing reaction rate. So the first blank (reaction rate change) is "increase", and the second (particle experience) is "more frequent (and energetic) collisions" or "greater kinetic energy" (common phrasing for this concept is that particles have more frequent collisions or higher kinetic energy at higher temps, leading to faster reaction rate).

Answer:

First blank: increase; Second blank: more frequent collisions (or greater kinetic energy, depending on standard curriculum phrasing, but "more frequent collisions" is a common fill - in here)