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.

[EX Q]: Question: Curt wants to make a drink from chocolate chips and milk. To make the chips melt more slowly, Shane will use chips that are 
 Answer: bigger
[EX A]: It would be hard to get a big chunk of chocolate to dissolve in your milk or hot water. Maybe you could make hot chocolate from some smaller pieces like chocolate chips, but it is much easier to add a powder to your milk. This is because the smaller the pieces are, the more surface area they have.

[EX Q]: Question: Mary and Clare go to the beach. Mary uses a sunscreen with SPF 45. Clare uses a sunscreen that has an SPF of 20. Who skin will be protected less? 
 Answer: Clare
[EX A]: A sunscreen with a higher SPF protects the skin longer.

[EX Q]: Question: Megan had two charged metal balls that she was analyzing. If she decreases the charge of the balls, the electrostatic force between them 
 Answer: decreases
[EX A]:
The more charged the objects are, the stronger the electrostatic force between them.