explain using the kinetic molecular theory, why a liquid becomes a solid when the temperature is decreased.

A liquid becomes a solid if its temperature decreases. In general a gas becomes a liquid or solid when it is cooled. Particles have less energy and therefore move closer together so that the attractive forces become stronger, and the gas becomes a liquid or a solid.

Attractive forces between particles: Very strong ...

Spaces between particles: Very little space bet...

Energy and movement of particles: Low energy - ...

the answer would be b i believe

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )