Compare and contrast Aufbau principle and the Pauli exclusion principle.

The first three steps in the formation of the sun are listed below. A cloud of gas and dust called nebula spins slowly. The nebula collapses due to condensation of gases. The cloud spins faster as it collapses.

Which is a property of every heterogeneous mixture? a. The mixture is made up of at least two different states. b. The mixture is made up of something dissolved in a liquid. c. The composition of the mixture is the same throughout. d.

How important is chlorine economically

Describe a method you could use to obtain crystals of potassium nitrate from potassium nitrate solution. You should include an explanation of how the crystals are produced from the solution.

Ideally, how should a buffer be prepared? A. in such a way that pH = POH B. in such a way that pH = pka c. in such a way that pH = Kg D. in such a way that pH = 1

2. Why are stain used when preparing observing cells under the

Based on periodic trends of electronegativity, what statement regarding the halogens is MOST accurate? A) Flourine has the lowest electronegativity. Eliminate B) Iodine has the strongest tendency to attract electrons.

The masses of reactants is always greater than the masses of the products in a chemical reaction, because the products are combined together. TRUE FALSE

Which is a characteristic of a solution1. its particles scatter light2. ita particles are evenly distributed 3. its particles settle out 4. it has large suspended particles

Why might the increase of noise in natural areas be a problem, according to scientists studying wildlife? Support your answer with at least two details from the text.