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: When you hold two magnets far away what is the force between them? 
 Answer: Weak

Answer: As the distance between the objects increases the magnetic force of attraction decreases.


Question: Question: A small container that has 100 hydrogen ions is sitting near a larger container that has 2 hydrogen ions. The solution in the larger container is 
 Answer: less acidic.

Answer: With a higher the concentration of hydrogen ions, a solution is more acidic and has a lower pH.


Question: Question: Karen is studying friction in school. She wonders, of her two twin friends Sara and Samantha, which is causing more friction with the floor. They have on different shoes. Sara is wearing smooth soled tap shoes, while Samantha is wearing much rougher soled work boots. Assuming their weight is the same and all other factors are constant, _____ is creating less friction with the ground. 
 Answer: Sara

Answer:
Friction is greater when objects have rougher surfaces or are heavier so they press together with greater force.