help for biology
Lab 3 Elements BIO-105 Name:___________________
Introduction to Biology-BIO105
Lab 3 Interactive Periodic Table
Introduction
(Source: adapted from https://pubchem.ncbi.nlm.nih.gov/periodic-table/ )
In 1869, The creator of the periodic table, Dmitri Mendeleev, began collecting and sorting known properties of elements, like he was playing a game, while traveling by train. He noticed that there were groups of elements that exhibited similar properties, but he also noticed that there were plenty of exceptions to the emerging patterns.
Incredibly, instead of giving up, he tried altering the measured property values to better fit the patterns! He also predicted that certain elements must exist which didn’t at the time – again, to get the patterns in his "game" to work out. Mendeleev predicted; his patterns could not be dismissed. In addition, some of the properties that he "fudged" were later recalculated and found to be much closer to his predictions.
The periodic table as we know it today is managed by the International Union of Pure and Applied Chemistry, or IUPAC (eye-you-pack). While much of what is in the periodic table is stable and unlikely to change, the IUPAC organization is responsible for deciding what needs to be changed. They have created criteria for what constitutes the discovery of a new element.
In addition, any new element must be assigned a temporary name and symbol, and if validated, given an official name. Such was the case when IUPAC recently reviewed elements 113, 115, 117 and 118, and decided to give them official names and symbols (goodbye, ununseptium and hello, tennessine!).
Atomic weights found within a periodic table one might think are constant. The truth is that atomic weights have changed as a function of time. Since 1899 the IUPAC Commission on Isotopic Abundances and Atomic Weights (CIAAW) has been evaluating atomic weights and abundances. For example, Carbon had an atomic weight of 12.00 in 1902 but today it is [12.0096, 12.0116]! Times sure have changed as the source of the sample will determine the value.
Of the 118 elements, only 33 are essential for the human survival and living. The main ones that are found in large quantities are oxygen, carbon, hydrogen, nitrogen, and sulfur. Then, there are macro minerals such as sodium, magnesium, potassium, calcium, chlorine, and phosphorus. Also, there are a group of trace elements found in the periodic table such as iron, lead, silicon, barium, zinc, molybdenum, rubidium, boron, copper, arsenic, strontium, cobalt, bromine, chromium, tin, nickel, manganese, selenium, iodine, lithium, aluminum, and vanadium.
Objectives:
The objectives of this lab are be able to create an element brochure which displays the students understanding of the periodic table’s elements, atomic number, structure, and the applications of various elements to everyday life.
Procedure:
1. Go to: https://ptable.com/
2. Pick out your favorite element in the periodic table, and prepare an element brochure with the following
3. What is the atomic number and mass number for this element? List the atomic number
4. and atomic mass of the element.
5. Which group and period of the periodic table is it in?
6. Is it a metal, nonmetal, or a metalloid?
7. How many protons, electrons, and neutrons does it have?
8. Describe the physical characteristics of the element
9. How is the element found in nature? Is it a gas, liquid, solid or does it have many states?
10. Research the various uses for this element. For example, is the element used in industry, agriculture, as food preservative or enhancer?
11. Does the element you picked essential for humans and if so how?
12. Go to: http://www.nclark.net/PtableMagicSquare.htm
13. Create an element brochure using the example found of your favorite element: http://www.nclark.net/PtableMagicSquare.htm
14. Here are the instructions for making the Element Brochure:
15. You are to make an attractive eye-catching brochure on a regular sized 8 ½” x 11” paper. The brochure must be trifold or bi-fold and must look like something you would like to read if you just happened to see it laying around. Research the element you were assigned. This brochure must include the following information:
1. Name of element and how it got its name. 2. Symbol, Atomic Number and Atomic Mass 3. Where it’s found and in what form (compound). 4. Physical facts: a. Melting point b. Boiling point c. Density d. Abundance in the earth’s crust 5. Uses 6. Source(s) of your information
Element Choices:
|
16. Hydrogen Boron Fluorine Aluminum Chlorine Platinum Arsenic |
17. Helium Carbon Neon Silicon Silver Lead Krypton |
18. Lithium Nitrogen Sodium Phosphorus Mercury Nickel Tin |
19. Berilium Oxygen Magnesium Sulfur Gold Copper Chromium |
20. To make your brochure, use Microsoft Publisher which is part of the Microsoft Office Suite. All BHCC students get Microsoft Office Suite free at with a student account: https://www.bhcc.edu/aide/distanceeducation/office365access/
21. Submit your Element Brochure into Moodle for Grading and Evaluation. Submission should be a Microsoft Word (or publisher) document or PDF file.
A nice table to also consult can be found at :http://www.sciencegeek.net/tables/PToE_basic.pdf