question: If Mona has filled a balloon with helium and she removes some gas from it, what happens to the likelihood that the helium particles will collide with each other?
choices.text: more likely less likely
choices.label: A B
para: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.
para_anno.effect_prop: likely to collide
para_anno.cause_dir_str: closer
para_anno.effect_dir_str: more
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: MORE
para_anno.cause_prop: particles
question_anno.more_effect_dir: more likely
question_anno.less_effect_dir: less likely
question_anno.less_cause_prop: gas
question_anno.more_effect_prop: collide
question_anno.less_effect_prop: collide
question_anno.less_cause_dir: collide