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Properties of Ionic and Covalent Bonds

Problem: How are the properties of Ionic and Covalent bonds similar and different?

Standards:
3. 8th Grade Science Standards: Each of the more than 100elements of matter has distinct properties and a distinct atomic structure. All forms of matter are composed of one or more of the elements. As a basis for understanding this concept. b. Students knowthat compounds are formed by combining two or more different elements and that compounds have properties that are different from their constituent elements. c. Students know atoms and molecules formsolids by building up repeating patterns, such as the crystal structure of NaCl or long-chain polymers. 7. The organization of the periodic table is based on the properties of the elements and reflectsthe structure of atoms. As a basis for understanding this concept. c. Students know substances can be classified by their properties, including their melting temperature, density, hardness, andthermal and electrical conductivity.

Materials:
• Stations with the following materials: distilled water, salt, vegetable oil, detergent, hydrogen peroxide, orange juice, vinegar, sugar, baking soda,2 small beakers, small jar with a tight fitting lid, small plastic spoon, graduated cylinder 100mL, heavy pot, hot plate, wooden spoon, Conductivity apparatus: 5-volt battery, a light bulb mountedstation, and three pieces of insulated copper wire to make an open circuit (the circuit will be closed with each of the unknown samples), two pieces of naked copper wire, Safety goggles, GlovesProcedure:
Stations
1. Before beginning experiment, read problem, materials, procedures and safety handout at each station. Put on required safety gear, copy any charts or questions into a separate sheetof paper. Complete all questions for each station. Students will have 10 minutes at each station. Students need to bring a pencil or pen, paper, activity sheet, and science journal to each station....