When an atom loses one or more electrons, this atom becomes a

Ms. Jones brought this rock to her science class and instructed her students to explain how it was formed. Which explanation is a true description of the rock?

A meteor contains 0.556 g of pb-206 to every 1.00 g of u-238. assuming that the meteor did not contain any pb-206 at the time of its formation, determine the age of the meteor. u-238 decays to pb-206 with t1/2 = 4.5 x 109 y

Is cereal soup? Why or why not?

What weather conditions would you expect on the windy side of a mountain?

As the nucleus of an unstable atom emits only gamma radiation, the nucleus must

What would happen if you tried to sqeeze a gas into a smaller container?

Paint, paint thinners and some cleaning agents can weaken the shell of a hard hat and may eliminate

A 10 chunk of metal has a specific heat of 0.25 J/g ºC. The temperature is changed from 10ºC to 45ºC. How much heat is required?

In this reaction what is the correct coefficient for sodium chloride? pb (no3) 2? nacl → pbcl2? nano3

Classify each of the following as a path function or a state function. work energy distance traveled enthalpy heat