Who's of the following is classified as a salt: ammonia or sodium chloride?

Why doesn't the air around you crush objects such as your desk?

Which of the following statements is true? Electrons have a positive charge. All shells can hold up to eight electrons. Protons and neutrons are found in the nucleus. Electrons and protons are found in the nucleus.

The color of a star depends on its, and - colored stars are the coolest.

Scientific theories can be formed after many hypotheses, experiments, and observations have been made that all validate the same idea. Once a theory is established and used to make accurate predictions, it is set in stone as a fact.

A balloon is rubbed against a student's hair and then touched to a wall. The balloon "sticks" to the wall due to

An automobile battery is an example of a a. wet cell. b. dry cell. c. thermocouple. d. fuse.

An object has a mass of 13.5 kilograms. What force is required to accelerate it to a rate of 9.5 m/s2?

How is work related to force and displacement?

Approximately how many news cases of STIs occur in the United States each year? Sexually transmitted infections are widespread in the United States. Approximately half of new cases occur in which age group?

How does mass effect potential and kinetic energy on a roller coaster?