1. Tursday, 12/5 Day 1 Science Starters Sheet 1. Please have these Items on your desk. AR Book Agenda 2- Fill out your Agenda. 3.Science Starter: Balance the following equations: P + O 2 P 4 O 10 Mg + O 2 MgO Work Sheets

2. Todays to do list... Grade worksheet on Balancing Equations Notes on Bonding Basics

3. 8 th Grade Science T. Trimpe 2008 http://sciencespot.net/

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

5. 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 _______________. POSITIVE NEGATIVE ION CATION ANION “An-Eye-On” “Cat-Eye-On”

6. 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 + ChlorineExample B2: Magnesium + Iodine ELECTRONS COMPLETE METAL NONMETAL NaCl Mg I I

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

8. 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 + HydrogenExample C2: 2 Hydrogen + Oxygen SHARE COMPLETE NONMETAL H H H H O

9. Example C3: Chlorine + ChlorineExample C4: Oxygen + Oxygen Cl O O CC O O H H H H Example C5: Carbon + 2 OxygenExample C6: Carbon + 4 Hydrogen