Chemistry Questions and Correct Detailed Answers (Verified Answers) ||Already Graded A+||Newest Version

What is an electron? Ans: The negatively charged subatomic particle of an atom. What is an alpha particle? Ans: Helium ions that are positively charged. What is the nucleus? Ans: The very small dense region in the center of an atom that contains all the positive charge and most of the mass. What is a proton? Ans: The positively charged subatomic particle contained in the nucleus of an atom. What is an orbit? Ans: The circular path of an election traveling around the nucleus. Give an example of an electromagnetic spectrum. Ans: -Radio waves -Microwaves -Infrared -Visible -Ultra violet -X-rays -Gamma rays What is a frequency? 2 Exampromax - Stuvia US2025/2026 Approved By: Exampromax - Stuvia US Ans: The number of waves per second or cycles per second or Hertz. What is a wavelength? Ans: The distance measured from crest to crest of one complete wave. What is a photon? Ans: A fixed packet of electromagnetic radiation that has a given amount of energy. What was the problem with Niels Bohr's atomic theory? Ans: It could only account for the spectrum of hydrogen. What is ionization energy? Ans: The amount of energy needed to totally remove an electron from the atom. What are ions? Ans: Atoms that have lost or gained electrons. What is electron configuration? Ans: The arrangement of the electrons of an atom in its different energy sublevel(s) What is an excited sta