Unit 1 Chemical Bonding: Ionic 1.4 How does Ionic Bonding Work? AIM: How does ionic bonding work and how can we tell it happened?? DO NOW: Draw the Lewis Structure for Calcium How many electrons does Calcium want to gain or lose ? Write the ion that is formed (don’t forget the charge!). Why does an ion have a charge? Does the radius of this Calcium ion increase of decrease? Ca 6 2 Ca+2 Because #P = 20 and #E=18

THINK MODELS SKINNY MODEL is a POSITIVE (+) thing in the fashion industry FAT MODEL is a NEGATIVE (-) thing in the fashion industry

REVIEW: HOW DOES AN ION FORM? Lewis Dot Diagram Ba Gain:_____ Lose:_____ Ion: Charge: 6 Ba +2 +2 2

BOND. CHEMICAL BOND YOUR DEFINITION Only the chemist can tell, and not always the chemist, What will result from compounding Fluids and solids. And who can tell How men and women will interact On each other, or what children will result? There were Benjamin Pantier and his wife, Good in themselves, but evil towards each other: He oxygen, she hydrogen, Their son, a devastating fire. -- Edgar Lee Masters, Spoon River Anthology Ca 1916

Two or more kinds of atoms WHAT IS AN BOND? IN SCIENCE DEFINITION A force that binds atoms in a compound together Substance made of Two or more kinds of atoms

WHAT IS A BOND? TYPES OF BONDS IONIC BONDS COVALENT BONDS

COMPLETE A READING OUR DEFINTIONS OUR DEFINTIONS DIRECTIONS: Read the passage and watch the videos to Develop your own definition of each type of a bond. OUR DEFINTIONS IONIC BONDING COVALENT BONDING Bonds that are formed between ions due to TRANSFER OF ELECTRONS Bonds that are formed between atoms due to SHARING OF ELECTRONS OUR DEFINTIONS Between metal and a nonmetal Between two nonmetals Conduct electricity when dissolved in solution Usually liquid or a gas

Method that helps us determine what compounds HOW DO WE BOND ATOMS? CRISS-CROSS RULE Method that helps us determine what compounds form when atoms bond.

: : : : . : . : : : . : : . . . LET’S TRY SOME Mg F Mg F F Mg+2 F-1 DIRECTIONS: Complete the following using the Information from the example. MgF2 CH4 : : : : LEWIS DOT DIAGRAMS Mg F . : . : : : TRANSFER OF e- . Mg F : : . F . . IONS FORMED Mg+2 F-1 Mg1F2 MgF2

NEXT Complete the INDEPENDENT PRACTICE When you are done, you may work on the following: CHEMISTRY VOCABULARY JOURNAL - you will be allowed to use this on your quizzes and (some of) your exams