Chemical Bonding

Instructions: Use your web-searching skills to answer the following questions and to complete the “Bonding Comparison Chart”. You may need to visit a wide array of sites in order to locate and validate your answers!

Introduction to Bonding Make sure your answers are in your own words!

1. What is a chemical Bond?

A chemical bond is an attraction between atoms in order to create compounds made of two or more atoms.

2. Why do most atoms form chemical bonds?

Atoms form bonds in order for each atom to have a complete outer shell, and to become stable and ‘happy ’

Bonding Comparison Chart

Ionic Covalent Metallic (Metals) Types Of Atoms Involved

Metals and Nonmetals Nonmetals Metals and Metals Metals? Nonmetals? Metalloids? Some of each?

Method Of Bond Formation

HOW do the atoms bond A Transfer of electrons Sharing of valence Valence electrons are from the metal to the electrons between shared among all of the together? What is actually nonmetal. Positive ions nonmetal atoms. This atoms. It is a ‘sea of happening in order for the and negative ions are ensures that each atom electrons’ among a bonds to occur? Are attracted to one another has a complete valence positively charged group electrons transferred? and the bond occurs. (outer) shell. of nuclei. Shared? Traded? This section is VERY important!

Type of Structure

Once the compound is created, what does it look Crystalline (Regular) or Crystalline (Regular) with like? Does it have a crystal Molecular Crystal Lattice (Regular & electrons moving structure? Lattice (Forms a Molecule) Repeating) throughout all atoms structure? Are the electrons shared among all of the atoms’ nuclei? Does it form a molecule? Physical State

Liquids and Gases What state of matter are Solids (and very low melting point Solids most compounds of each solids) type? Solid, Liquid, Gas, Plasma? Some of each? Melting Point High Melting Points Low Melting Points High Melting Points

What kinds of melting

points do most Compound 1: NaCl Compound 1: CCl4 Metal 1: Aluminum compounds of each type Melting Point: 800° C Melting Point: -23° C Melting Point: 660° C have? High? Low? Provide Compound 2: MgO Compound 2: H O Metal 2: Copper Examples of melting point 2 Melting Point: 2852° C Melting Point: 32° C Melting Point: 1084° C for each type of compound Solubility in Water Yes! No Way! Yes! No Way! Yes! No Way! Are the compounds soluble in water? Circle One! Electrical Conductivity Yes! No! Kinda! Yes! No! Kinda! Yes! No! Kinda!

Explain: Ionic Compounds Explain: Covalent Explain: Metals conduct Do the compounds conduct conduct electricity when compounds do not electricity as solids and electricity? Circle one and melted or when they are conduct electricity no when they are melted. explain! dissolved in water. matter what state of matter Property 1: Most ionic Property 1: Some are Property 1: Most metals compounds are hard. flammable. are malleable (can be Other Properties hammered) Property 2: Most ionic Property 2: Poor What are 2 other compounds are brittle. conductors of heat. Property 2: Most metals properties for each type are shiny and hard. of compound??

Image

Draw an image of each type of BOND! Be sure to show what is happening with the

electrons during the bond!