Objectives: Students Will Research on the History of the Periodic Table to Understand Its

Objectives: Students will research on the history of the periodic table to understand its history and development.

Periodic Table WebQuest

Instructions: In each of the websites listed, find the information asked for.

Part I: “Major Players”Go to

Scientist / Contribution to the development of the periodic table
Greek thinkers
Lavoisier
John Dalton
Doberiner
Dechancourtois
Cannizaro
Newlands
Meyer
Mendeleyev
Moseley
Seaborg

Part II: “Get Organized Periodically” Go to

1. Why are the elements placed in specific places on the Periodic Table?

1. Periods are ______that run from left to right.

1. Elements in the same period have the same ______.

1. Every element in the first period has ______shell for its ______. Every element in the second period has ______for its ______. See the pattern?

1. Groups are ______that run from top to bottom.

1. The elements of a group have the same number of ______in their ______shell.

1. Every element in group one has ______electron in its outer shell. Every element in group two has ______electrons in its outer shell.

1. Hydrogen is special because it can act like two groups, ______and ______.

1. Hydrogen sometimes is ______an electron and sometimes it has an ______electron.

1. Although helium has only ______electrons in its outer shell, it is grouped with elements that have ______.

1. The green elements on this table are called ______elements. They each have two electrons in their outer shell.

Part III: “Family Fun” Go to http.//chemicalelements.com/

1. Click on Alkali Metals (left bar) and answer the following questions.

1. What is the group number? ______

1. Are these metals reactive? ______

1. Do these metals occur freely in nature? ______

1. How many electrons are in their outer shell? ______

1. What are the three characteristics of ALL metals? ______

1. Are these metals soft or hard? ______

1. Name the two most reactive elements in this group? ______and ______

1. What happens when they are exposed to water? ______

Watch:

What happened, and what reacted in all cases with the Alkali Metals?

1. Click on Alkaline Earth Metals (left bar) and answer these questions.

1. What is the group number? ______

1. Are these metals reactive? ______

1. Do these metals occur freely in nature? ______

1. How many electrons are in their outer shell? ______(Hint: It’s the same as their oxidation number or group number.)

Watch:

How are Alkaline Earth Metals different from Alkali Metals?

Why are neither found in nature by themselves?

1. Click on Transition Metals (left bar) and answer these questions.

1. How many elements are in this group? ______

1. What are the group numbers? ______through ______

1. What are valence electrons? ______

1. Because the valence electrons are present in more than one ______transition metals often exhibit several common ______.

1. Name the three elements in this family that produce a magnetic field. ______,

______, and ______.

Watch:

What are these metals most known for?

1. Click on Other Metals (left bar) and answer these questions.

1. How many elements are in this group? ______

1. What are the group numbers? ______through ______

1. How are these other metals similar to the transition metals? ______

1. How are these metals different than the transition metals? ______

1. List three physical properties of these other metals. ______

Watch:

Why is aluminum so easily recycled (what physical property?)

How quickly can a can be melted and repackaged as a new can?

1. Click on Metalloids to answer these questions.

1. On your periodic table, draw the black stair-step line that distinguishes metals from nonmetals.

1. Metalloids have properties of both ______and ______.

1. Define semiconductor ______.

1. Name two metalloids that are semi-conductors. ______and ______.

1. This property makes metalloids useful in ______and ______.

1. Click in Nonmetals to answer these questions.

1. What are the group numbers? ______through ______

1. List four characteristics of ALL nonmetals. ______

1. What two states of matter do nonmetals exist in at room temperature? ______

1. The nonmetals have no ______and do not ______.

1. What are the oxidation numbers of the nonmetals? ______

1. Click on the Halogens (left bar) to answer these questions.

1. What is the halogen group number? ______

1. Are halogens metals or nonmetals? ______

1. The term “halogen” means ______and compounds containing halogens are called ______.

1. How many electrons are in their outer shell? ______

1. What is their oxidation number? ______

1. What states of matter do halogens exist in at room temperature? ______

Watch:

What are some unique properties demonstrated form the video?

1. Click on Noble Gases (left bar) and answer these questions.

1. What is the group number? ______

1. Why were these gases considered to be inert or stable? ______

1. What is their oxidation number? ______

Watch the video

How much argon do you breath in each breath?

How reactive is argon?

1. Click on Rare Earth Elements ( Inner Transition) (left bar) and answer thesequestions.

1. On you periodic table, label the Lanthanide and Actinide series with your pencil.

1. How many Rare Earth elements are there? ______

1. Define trans-uranium. ______

1. The Rare Earth metals are found in group ______and periods ______and ______.

Part IV: “Customizing Your Own Periodic Table”

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