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.

Q: Question: When April rested on the couch, as opposed to running, she noticed that her heart was beating 
 Answer: slower

A: Warming up exercises increases the blood flow to the muscles and increases the heart rate.
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Q: Question: Katie is looking at solid reactants, and is wondering how they will react. The reaction rate is increased in surface areas which are 
 Answer: larger

A: Therefore, increasing the surface area of solid reactants increases the reaction rate.
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Q: Question: In diffusion, the lighter particles move 
 Answer: faster

A:
The mass of the particles: lighter particles will diffuse faster, because on average they move faster.
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