Atoms Unite!
Let’s Make a Bond Webquest
Introduction
A chemical bond form when atoms combine to form stable compounds and molecules. In this activity
you will learn about different types of chemical bonds and how they are formed. You will also learn why
some atoms bond with other atoms and why some do not bond. Complete the worksheet provided by
your teacher as you learn about chemical bonding in this web quest.
Log on to the following website:
http://www.kn.att.com/wired/fil/pages/listchemicalwe.html
SECTION 1: Introduction to bonding
1.
What is a chemical bond?
2.
Explain why do most atoms form chemical bonds?
SECTION 2: Types of Chemical Bonds
1.
Atoms can react with one another to form new substances called _________________________.
2.
In 1916, the American chemist Gilbert Newton Lewis proposed that chemical bonds are formed
between atoms because ______________from the atoms interact with each other. He suggested that
atoms with fewer than ____________________________bond together to share electrons and
complete their __________________________________.
3.
There are two main types of chemical bonding;____________ bonding and
_______________bonding.
4.
(a)What is an ionic bond?
(b) How are ionic bonds formed?
(c) Give one example of an ionic bond.
5.
http://www.visionlearning.com/library/module_viewer.php?mid=54 This website explains the reaction
between sodium and chlorine to produce sodium chloride. Read the information and (1) write a
summary and (2) Sketch an illustration which show how sodium and chlorine bond with each other.
SUMMARY:
ILLUSTRATION:
http://www.visionlearning.com/library/module_viewer.php?mid=55
6.
Ionic compounds have many features in common. List FIVE features of ionic compounds.
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7.
(a) What is a covalent bond?
(b) How are covalent bonds formed?
(c) Give one example of a covalent bond.
8.
http://www.visionlearning.com/library/module_viewer.php?mid=55&l=
(a) Covalent molecules exist as true ___________________because electrons are
_____________________in covalent molecules, no full ionic charges are formed. Covalent
molecules are not strongly attracted to one another. As a result, covalent molecules move about
freely and tend to exist as _____________ or ___________________at room temperature.
(b) Both atoms in the H2 molecule have an equal attraction (or affinity) for
_______________________. The bonding electrons are equally shared by the two atoms, and a
________________________________________is formed.
(c) Whenever two _______________of the same element bond together, a
____________________________is formed.
(d) A polar bond is formed when electrons are _______________ shared between two atoms.
(e) In a polar covalent bond, the bonding electrons will spend a ____________amount of time around
the atom that has the _____________affinity for electrons.
(f) List one example of a polar covalent bond.