If an isotope of nitrogen has a mass number of 15 and an atomic number of 7, how many subatomic particles are in the nucleus?

Water changes shape to fill the shape of its container. What is the best explanation for this? A. It's a physical property of water. B. It's a chemical property of water. C. The particles in water have low energy. D.

Argon, neon, and xenon are examples of A. Halogens B. metalloids C. noble gases D. alikia metals

Are dinosaur footprints original remains?

Energy which travels through space in the form of waves is known as A.) electrical energy B.) electromagnetic energy C.) nuclear energy D.) thermal energy

What are the two most important properties of a telescope?

A fountain of water and steam that erupts from the ground

A heavy rope, 50 ft long, weighs 0.5 lb/ft and hangs over the edge of a building 120 ft high. how much work is done (in ft-lb) in pulling half the rope to the top of the building?

Does adding a neutron to an atom's nucleus makes it an ion?

What is the difference between a fault-block and upwarped mountains?

Which of the following is not one of the reasons to properly warm up before exercising? A. Develop overall flexibility. B. Increase blood flow to the muscles and raise body temperature. C. Prevent injuries such as strains sprains and muscle cramps.