TASK DEFINITION: In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.
PROBLEM: Question: Katie is looking at particles of reactants, and is noting that they currently are moving very slowly, and that they seem to have a little energy. These particles are likely at a temperature that is 
 Answer: lower

SOLUTION: At higher temperatures, particles of reactants have more energy, so they move faster. They are more likely to bump into one another and to collide with greater force.

PROBLEM: Question: If Mona is observing two objects and she realizes that one has a smaller mass then the other, what does that tell her about that object's thermal energy? 
 Answer: it's smaller

SOLUTION: An object with more mass has greater thermal energy than an object with less mass because it has more atoms.

PROBLEM: Question: If the air temperature falls during a heat wave, what is likely happening to the atmospheric pressure? 
 Answer: It will increase

SOLUTION:
Increasing air temperature decreases atmospheric pressure.