# Chapter 6

This chapter will take us on a tour of the periodic table. We will examine the history of the periodic table, how our knowledge of atomic structure applies to the table, and how the concept of periodicity can allow us to make predictions about a chemicals reactivity and other properties.

CMC Chapter 06 Edited.ppt

# Periodic Webquest

Copy and paste everything below into a document. Feel free to remove the instructions and pictures to take up less space, but you don't have to. Type your answers into the webquest and submit it to the dropbox to help save paper. You may work in pairs and submit one webquest, or by yourself, but no groups of 3.

Elementquest

An Exploration of the Periodic Table

1) During the 19th century, several scientists had tried to organize the known elements into a workable table. The man credited with designing the periodic table we use today is Dmitri Mendeleev. Using the Treasure Trove of Scientific Biography, answer these questions about this famous chemist. You will need to click on the alphabetical index on the left side and then navigate to find Medeleev.

A) In what country was Mendeleev born?

B) He lived from when to when?

C) What is the title of his famous book and when was it published?

D) What group of elements did he omit? Why?

2) Before we can begin our little webquest, we need some definitions. This website--named How Many--will help us to define two important words we will need to complete this exercise. Using this website, please provide very brief definitions of these terms.

A) Atomic mass unit (u or amu)

B) Atomic number

3) You will be using the elements that correspond to the date of your birthday...but with a twist. If you are male, multiple your birth date by 2, 3 if you are a female. For example, if you are a girl born on the 10th, your element would be #30, Zinc. A boy born on the 29th would be #58, Cerium. Use one element for each person in your group and these elements are the ones you will use throughout this exercise.

Element 1____________________________________________________ Symbol______

Element 2____________________________________________________ Symbol______

Before you can go any farther, please use this website called Element Tables to find the symbol assigned to each of your two elements and write it in the appropriate blank.

4) This next site is color coded to help you find which group your element belongs to. Please use this site on the chemical elements to identity the appropriate group or family for each of your two elements. After you have found the groups for your elements, please click here and find and list the defining characteristics of those elements in that family. You will use the list of groups on the bottom left side of the page.

Element 1 Family:

Characteristics of that family

Element 2 Family:

Characteristics of that family

5) Now the work begins in earnest. Using this wonderful site provided to us by the Los Alamos National Labs, please give the appropriate information for each of your two elements.

Element 1________________ Element 2______________

Atomic Number __________ Atomic Number_________

Atomic Weight___________ Atomic Weight__________

Uses__________________ Uses__________________

Discovered by___________ Discovered by___________

When_____ When__________

6) Boiling point and melting point are key attributes to each element. Use any of the online periodic tables above, or your internet research skills, to find the boiling point and the melting point for each of your elements.

Element _______________________ Boiling pt._______ Melting pt._______Electron Configuration:

Element _______________________ Boiling pt._______ Melting pt._______Electron Configuration:

7) This website may take a minute to load. Be patient, for seldom in life do things worthwhile come quickly and easily. Using this incredible site, you will get to visual representations of your elements. This is all done by the same author of the "Elements" book on my bookshelf...check it out!

A) What visual accompanies your first element?

B) Give me a description of your first element.

Give me a description of your second element.

8) FUN TIME!! Whoever said science was boring and had little to do with real life. Using this site, you will see how your element has appeared in comic books. Find your element on the periodic table and then list a comic book title that deals with that element.

Element 1

Element 2

9) Mendeleev had the foresight to realize that the periodical table would always need additional space for newly discovered elements. Physicists and chemists are constantly creating or discovering new elements. Use this article and answer these questions.

a) Where were they discovered?

b) How were they created?

c) Superman would not have appreciated this project. What element was used to create the two new ones?

d) How long does it take element 118 to decay into element 116?

e) Both new elements eventually decayed into element 106. What is element 106?