Carbon-14 and carbon-12 have the same number of protons but a different number of neutrons. these different forms of the same element are

question 5 options:

a. radioactive

b. isotopes

c. nuclei

d. tracers

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole

Why do lunar and solar eclipse not happen every month

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.