Ques: The greater the objects mass, the greater the force of gravitational attraction. Will weighed himself on a scale. He weighs less than last year. His force of gravitational attraction increased or decreased?
Ans: decreased

Ques: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react. 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 more likely or less likely?
Ans: less likely

Ques: The greater the objects mass, the greater the force of attraction; in addition, the greater the distance between objects, the smaller the force of attraction. A rock has more mass than a pebble. Which object will exhibit a smaller force of attraction rock or pebble?
Ans: pebble

Ques: Lighter, more streamlined vehicles need less energy. A vehicle that was sleek and aerodynamic and a vehicle that was bulky were each driven the same distance over the same amount of time. Which vehicle needed to more energy to power it bulky vehicle or sleek vehicle?
Ans:
bulky vehicle