PH-1713
States of matter
Physics · Secondary 4 · Hard · States of matter
A sealed balloon filled with gas is left outside in the hot sun. The air pressure outside the balloon stays the same. Which statement explains what happens to the size of the balloon as it gets hotter?
- The balloon shrinks because particles move slower and collide less often with the walls.
- The balloon expands because particles move faster and push the walls outward more often.
- The balloon stays the same size because heating does not affect gas particle motion.
- The balloon shrinks because particles move faster and get closer together.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.