Which of the following is the best definition of force? a. attraction between all objects in the universe b. any push or pull that is exerted on an object c. an expression of the mass and distance between two objects d. the amount of matter in an object

What happens when chlorine reacts with bromine? a. electrons move from the chlorine atoms to the bromine atoms. b. electrons move from the bromine atoms to the chlorine atoms. c. electrons are shared between the chlorine atoms and the bromine atoms. d. electrons become delocalized among the atoms.

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves