Introduction to Bonding Activity Name _______________________________________Period_____Date_____________ Objective: Students will understand the different types of chemical bonds and the role that valence electrons play in bonding. Materials: Atom Packets 50 brads Procedures: Part A: 1. Get out all of the atoms in the packet. Match the symbol found on the atoms with the name on the data table. Write the symbol in the data table. 2. Using your periodic table. Write down how many total electrons each atom has. Write down if the atom is a metal or nonmetal. 3. Place the argon, neon, and helium atoms on your desk. Using the brads to represent electrons, Put the appropriate number of electrons in each atom. 4. Looking at these atoms you just filled with electrons, determine how many valence electrons each atom has. Record the number on your data table. 5. Now determine how many electrons the atom needs to get a full valence shell. Record the number on your data table. The octet rule states an atom need 8 electrons in its valence shell. This is true for every element except helium and hydrogen. They follow the duet rule that states an atom needs 2 electrons in its valence shell. 6. Write on your data table if the atom will gain or lose electrons to get a full valence shell. 7. Write down the ionic charge that will result when the atom loses or gains the electrons. 8. Take out the brads, return the atoms to the packet, and go on to Part B. Part B: 1. Place the chlorine, hydrogen, oxygen, sulfur, and fluorine atoms on your desk. Using the brads to represent electrons, Put the appropriate number of electrons in each atom. 2. Looking at these atoms you just filled with electrons, determine how many valence electrons each atom has. Record the number on your data table. 3. Now determine how many electrons the atom needs to get a full valence shell. Record the number on your data table. The octet rule states an atom need 8 electrons in its valence shell. This is true for every element except helium and hydrogen. They follow the duet rule that states an atom needs 2 electrons in its valence shell. 4. Write on your data table if the atom will gain or lose electrons to get a full valence shell. 5. Write down the ionic charge that will result when an atom loses or gains the electrons. 6. Repeat steps 1-5 of Part B for magnesium, sodium, lithium, and beryllium. 7. Form the compounds listed below: You will have to do this one at a time because you will not have enough brads to do all the compounds at once. First you must determine if it is a metal and a nonmetal bonding or a nonmetal and a nonmetal bonding. If it is a metal and a nonmetal bonding then electrons will be moving from one atom to the other. Introduction to Bonding Activity Move the appropriate number of electrons (brads) from one element to another. Put the proper charge stickers on the atoms to show the charges of the ions . If it is a nonmetal and a nonmetal bonding then electrons will be shared among the two atoms. Bond the two atoms by sharing the appropriate number of electrons (brads). After you have made the compound, diagram the compound. Circle any electrons that are shared in your drawing. Put a triangle around the electrons that moved from one atom to another. Make sure to include the charge of each ion in your diagram. Write whether it is a metal and a nonmetal bonding or a metal and a metal bonding. Write the formula of the compound below each diagram and write whether it is an ionic or covalent bond. Compounds: Magnesium and Sulfur Chlorine and Chlorine Hydrogen and Hydrogen Sodium and Chlorine Fluorine and Fluorine Lithium and Fluorine Chlorine and Hydrogen Beryllium and Oxygen Data Table: Atoms Argon Neon Helium Chlorine Hydrogen Fluorine Chlorine Magnesium Sodium Lithium Beryllium Oxygen Sulfur Symbols # of Electrons # of Valence Electrons # of valence Electrons needed to have a full valence shell. Gain or Lose Electrons Ionic Charge Metal or nonmetal