Define ionization energy and explain why the second ionization energy of any element is higher than its first ionization energy.

What are the five branches of Earth Science?

Clay soils generally have higher water-holding capacity than sandy soils. true or false?

What happens when you combine Mg2 and NO3

What is the limiting factor in determining the accumulation of siliceous ooze/calcareous ooze, respectively?

What value should you calculate when pka2 and pkb2 are added together?

Sea water, a solution composed of a variety of salts dissolved in water. the salt is the

Which equation using element symbols correctly describes the reaction: "One molecule of methane plus two molecules of diatomic oxygen react to form two molecules of water and one molecule of carbon dioxide?" A. CH4+2O2+2H2O→CO2 B. 2H2O+CO2→CH4+2O2 C.

Which of the following happens during a new moon? More than half of the moon is visible from Earth. Less than half of the moon is visible from Earth. The illuminated half of the moon faces towards Earth.

Which statement about Niels Bohr's atomic model is true? Higher orbits have lower energies. Each orbit has a specific energy level. Electrons can exist in any energy level. Orbits close to the nucleus have no energy.

How do mixtures differ from pure substances?