Question

what happens to the particles in a liquid when you lower the temperature? the particles slow down. the particles lose mass. the particles move faster. the particles get bigger.

Explanation:

Temperature is related to the kinetic energy of particles. As temperature decreases, kinetic energy decreases. Kinetic energy is related to the speed of particles (\(KE=\frac{1}{2}mv^{2}\), where \(KE\) is kinetic energy, \(m\) is mass, and \(v\) is speed). Mass of particles in a liquid is constant (unless there is a chemical reaction, which is not indicated here). Particle size (volume of individual particles) doesn't change with just a temperature - lowering (without a phase - change that would involve a chemical reaction or extreme conditions). Since \(KE\propto v^{2}\) (for a constant - mass substance), lower \(KE\) (due to lower temperature) means lower speed.

Answer:

The particles slow down.