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

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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.

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”

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

Example B3: Potassium + Iodine Example B4: Sodium + Oxygen Example B5: Calcium + Chlorine Example B6: Aluminum + Chlorine

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

Example C3: Chlorine + Chlorine Example C4: Oxygen + Oxygen Example C5: Carbon + 2 Oxygen Example C6: Carbon + 4 Hydrogen