instruction:
You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).
question:
Paragraph: When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser.
 Question: Sean is trying to see how fast the water molecules are moving in a container of water. He observes that the molecules are moving very slowly, so the temperature must be 
 Choices: A)cool 
B)warm
answer:
cool


question:
Paragraph: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.
 Question: DJ has a solution that he adds particles to. The solution is now a _____ concentration. 
 Choices: A)higher 
B)lower
answer:
higher


question:
Paragraph: Exhaling, or breathing out, decreases the size of the chest, which increases air pressure inside the lungs.
 Question: Jeff takes a breath and lets it out. When do his lungs experience the least air pressure? 
 Choices: A)after inhaling 
B)after exhaling
answer:

after inhaling