What is the goal of the atom in ionic bonding? Wednesday, 11/30 Day 1 Science Starters Sheet Agenda 1. Please have these Items on your desk. Science Note Book 2- Fill out your Agenda. Science starter: https://www.youtube.com/watch?v=DEdRcfyYnSQ What is the goal of the atom in ionic bonding?

T.O.C. Update Pg. 57 11/30 Bonding basics notes

T. Trimpe 2008 http://sciencespot.net/ Bonding Basics 8th Grade Science T. Trimpe 2008 http://sciencespot.net/

Section A: Complete the chart using a periodic table to help you. +1 -1 Cl 17 7 K 19 1 -1 +1 Mg 12 2 -2 +2 F 9 7 +1 -1 Al 13 3 -3 +3 Na 11 1 -1 +1 N 7 5 +3 -3 O 8 6 +2 -2 H 1 1 -1 +1 C 6 4 +4/-4 +4/-4 I 53 7 +1 -1

NEGATIVE POSITIVE ION CATION ANION Answer these questions: An atom that gains one or more electrons will have a ____________________ charge. An atom that loses one or more electrons will have a ____________________ charge. An atom that gains or loses one or more electrons is called an ____________. A positive ion is called a ______________ and a negative ion is called an _______________. NEGATIVE POSITIVE ION CATION ANION “An-Eye-On” “Cat-Eye-On”

Na Cl Mg I I ELECTRONS COMPLETE METAL NONMETAL What is an ionic bond? Atoms will transfer one or more ________________ to another to form the bond. Each atom is left with a ________________ outer shell. An ionic bond forms between a ___________ ion with a positive charge and a ________________ ion with a negative charge. Example B1: Sodium + Chlorine Example B2: Magnesium + Iodine ELECTRONS COMPLETE METAL NONMETAL Na Cl Mg I I

K Na O I Na Al Ca Cl Cl Cl Cl Cl Example B3: Potassium + Iodine Example B4: Sodium + Oxygen Example B5: Calcium + Chlorine Example B6: Aluminum + Chlorine K Na O I Na Al Ca Cl Cl Cl Cl Cl

Covalent Bond Ionic Bond -Bond between atoms where - Bond where one atom gains an an electron is shared. electron, while another loses an electron. -Goal: To become stable - Goal: To become stable (electron levels filled) (electron levels filled) -Ex.: O2 (two oxygen atoms) -Ex.: Sodium Chloride (NaCl) Salt

H H H H O SHARE COMPLETE NONMETAL What is a covalent bond? Atoms ___________ one or more electrons with each other to form the bond. Each atom is left with a ________________ outer shell. A covalent bond forms between two _________________. Example C1: Hydrogen + Hydrogen Example C2: 2 Hydrogen + Oxygen SHARE COMPLETE NONMETAL H H H H O

Example C3: Chlorine + Chlorine Example C4: Oxygen + Oxygen Cl Cl Example C5: Carbon + 2 Oxygen Example C6: Carbon + 4 Hydrogen H O C H C H O H