Answer:
Isotopes have the same number of protons but a different number of neutrons.
Explanation:
Answer: A convex lens is used to converge ligtht.
Explanation:
A concave lens is a lens that is thicker on the ends than in the middle. As consequence of this, a concave lens diverges (separate) the rays of light. A concave lens is also called diverging lens.
A convex lens is is thicker in the middle than on the ends. As consequence of this, a convex lense converge the parallel rays that pass through it. A convex lens is also called converging lens.
Atomic mass is just protons plus neutrons
Becuz the sun refelt off the earth and on to the moon.
