Monday, June 24, 2013

1SBS #19-24 pg. 51

19. Number of protons and neutrons needed for an electrically neutral atom:
  • a. Carbon: 6 protons, 6 electrons
  • b. Aluminum: 13 protons, 13 electrons
  • c. Lead: 82 protons, 82 electrons
  • d. Chlorine: 17 protons, 17 electrons


20. Are the following atoms electrically neutral?
  • a. Sulfur: no
  • b. Iron: no
  • c. Silver: yes
  • d. Iodine: no


21. Are the following atoms electrically neutral, an anion, or a cation?
  • a. anion
  • b. electrically neutral
  • c. electrically neutral
  • d. cation
  • e. cation
22. Was the electrical charge or lack of electrical charge for each particle in #21 from a neutral atom gaining electrons, losing electrons, or neither?
  • a. losing electrons
  • b. neither
  • c. neither
  • d. gaining electrons
  • e. gaining electrons


23. Symbol and electrical charge for the following atoms or ions:
  • a. H
  • b. Na+
  • c. Cl-
  • d. Al+


24. Name and formula for the ionic compound that can be formed from these cations and anions:
  • a. KI = potassium iodine
  • b. CaS = calcium sulfur 
  • c. FeBr = iron bromine
  • d. BaOH = barium oxygen hydrogen
  • e. NHPO = nitrogen hydrogen phosphorous oxygen
  • f. AlO = aluminum oxygen

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