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Understanding Ionic and Covalent Bonds in Chemistry

Learn about cations, anions, and how atoms form bonds in this informative science lesson for 8th grade students. Discover the concepts of ionic and covalent bonding with examples and explanations.

yael-kirby
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Understanding Ionic and Covalent Bonds in Chemistry

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

  2. Section A: Complete the chart using a periodic table to help you.

  3. CATION ANION “Cat-Eye-On” “An-Eye-On” 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

  4. 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

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

  6. 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

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

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