In the formation of alum, the initial filtration step is used to A. concentrate the aluminum hydroxide

B. remove impurities that were in the aluminum foil

C. remove impurities from the KOH

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above

In a ball-and-stick molecular model, what do the sticks represent?

Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.