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.
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Question: Question: Gina has longer fingernails than John. Who has more cells on their nails? 
 Answer: Gina

Answer: As the nail grows, more cells are added at the nail bed.


Question: Question: If something has a small surface area and is being mixed with something else it will react 
 Answer: slower

Answer: Surface Area of Reactants When a solid substance is involved in a chemical reaction, only the matter at the surface of the solid is exposed to other reactants. If a solid has more surface area, more of it is exposed and able to react.


Question: Question: A heavy boulder begins rolling down a hill and a beach ball rolls down alongside it. Which object will have more momentum as it rolls? 
 Answer: boulder

Answer:
The more mass a moving object has or the faster its moving, the greater its momentum.