CHM exp report 3 - CHM 151 Experiment Report Student's name...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
CHM 151 Experiment Report Student’s name : Lai Shin Zie ID : I08001607 Partner’s name : Nicholas Chai ID : I08001107 Section : 5A Lecturer’s name : Dr. Palsan A/L Sannasi @ Sannach Due date : 06 June 2008
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
30 May 2008 Experiment 3 : Periodic Table and Periodic Law Aim : 1. To determine the periodic trends of elements in the periodic table. 2. To determine the relative chemical reactivity of chlorine, bromine and iodine. 3. To determine the chemical properties of halides. 4. To determine the relative solubility of the hydroxides of magnesium and calcium. 5. To determine the chemical properties between sulfurous acid and sulfuric acid. 6. To determine the chemical properties of sodium. Procedure : Please refer to the laboratory manual page 23-30. Results : A. Periodic Trends in Physical Properties. 1a) The ionization energies are decreasing “down” the group. b) The ionization energies are decreasing “down” the group. c) The ionization energies are increasing across the period. 2a) Group 1. b) The atomic radii are increasing. c) The ionization energy is inversely proportional to the atomic radii. 3a) The halogens. b) No. According to the graph the electron affinities for elements in period 2 are slightly lower than the electron affinities for elements in period 3 although they same similar trends. c) Yes, they are in inverse proportional. When the atomic radii of an element increases, the electron affinities of the element decreases.
Image of page 2
4a) The melting point will increase from the first solid state element across the period until the first gases or liquid state element then the melting point will decrease. b) Carbon. No, it does not have high melting points. c) Increase at first then slightly decrease after that it increase again then lastly it decrease.
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern