What force of attraction is responsible for the dissolution of an ionic crystal in water?

Explain the purpose of pumping while running through a half pipe

What kind of electronic component is an LED (light emitting diode) ?

Which of the following would lead to the smallest entropy loss in the surroundings? A. An exothermic reaction in a cold environment. B. An endothermic reaction in a hot environment. C. An endothermic reaction in a cold environment. D.

Why are some pots and pans designed with wooden handles? A. Wood is a conductor. B. Wood has a high heat capacity. C. Wood is an insulator. D. Wood is an organic substance.

9. Which of the following is a false statement? A) Sounds waves are longitudinal pressure waves B) Sound can travel through a vacuum C) Light travels much faster than sound D) The transverse waves on a vibrating string are different from sound waves

What is impossible for a machine to do? A) do a greater amount of work than the amount of work done on the machine B) apply a force in a direction that is different than the direction of the force applied to the machine C) move an object a greater

The phosphorus cycle keeps phosphorus availability naturally low. True or false?

Which best describes nuclear fission? A. A nucleus spontaneously splits and absorbs energy. B. Two nuclei spontaneously combine and absorb energy. C. A nucleus collides with a neutron and splits, releasing energy. D.

Which of the following is an example of conduction? A. A metal spoon becomes warm when placed in a cup of hot tea. B. Campers warm up while sitting by a campfire. C. A dog's bowl of water warms up out in the Sun. D.

Hink about the friction activity. Return to this activity to see it again if you need to. Explain what happened in each of the two demonstrations, and then compare them. Use the terms resistance, vacuum, gravity, velocity, and friction.