Report 2
Practical 5: Properties of Compound
Experiment 1: Properties of A Compound and Its Parent Elements
Hypothesis
The hypothesis of this experiment is magnesium oxide can be synthesized by combining (burning) the magnesium with oxygen. The chemical and physical properties of each element (magnesium, oxygen, and magnesium oxide) might be different, from the state, color, electrical conductivity, and pH.
Aim
This experiment was performed to synthesize magnesium oxide by direct combination of magnesium and oxygen and to compare the properties of the elements (magnesium and oxygen) in their elemental state with the properties of the compound of these elements (magnesium oxide).
Introduction
When elements react to form compounds, their chemical and physical properties change. Their outer shells become complete (the octet rule) and the resultant compound is usually more stable. In this experiment, magnesium oxide will be synthesized by direct combination of magnesium with oxygen. The properties of magnesium, oxygen, and magnesium oxide will be tested and compared. The balanced chemical equation for this process is:
Mg + O2 2MgO
Materials:
* * Magnesium ribbon * H2O (water) * Tongs * 250 ml beaker * Test tubes * 10 ml measuring cylinder * Bunsen burner * Safety glasses * Stirring rod * Universal indicator (include pH color chart) * Electrolyte tester * Stopper
Procedure 1. Observed and record the state, color, and the electrical conductivity of the magnesium ribbon and record the result. 2. Put 1 cm of magnesium ribbon into a beaker that was added with 10 ml of water (H2O) and added some drops of Universal Indicator (UI) into the test tube. 3. Observe and record the color result and pH. 4. Added 10 ml of water and few drops of Universal Indicator (UI) into the test tube. 5. Stopper before shook the test tube to inflate the water (H2O) with the oxygen (O2). 6. Record the color result
Experiment 1: Properties of A Compound and Its Parent Elements
Hypothesis
The hypothesis of this experiment is magnesium oxide can be synthesized by combining (burning) the magnesium with oxygen. The chemical and physical properties of each element (magnesium, oxygen, and magnesium oxide) might be different, from the state, color, electrical conductivity, and pH.
Aim
This experiment was performed to synthesize magnesium oxide by direct combination of magnesium and oxygen and to compare the properties of the elements (magnesium and oxygen) in their elemental state with the properties of the compound of these elements (magnesium oxide).
Introduction
When elements react to form compounds, their chemical and physical properties change. Their outer shells become complete (the octet rule) and the resultant compound is usually more stable. In this experiment, magnesium oxide will be synthesized by direct combination of magnesium with oxygen. The properties of magnesium, oxygen, and magnesium oxide will be tested and compared. The balanced chemical equation for this process is:
Mg + O2 2MgO
Materials:
* * Magnesium ribbon * H2O (water) * Tongs * 250 ml beaker * Test tubes * 10 ml measuring cylinder * Bunsen burner * Safety glasses * Stirring rod * Universal indicator (include pH color chart) * Electrolyte tester * Stopper
Procedure 1. Observed and record the state, color, and the electrical conductivity of the magnesium ribbon and record the result. 2. Put 1 cm of magnesium ribbon into a beaker that was added with 10 ml of water (H2O) and added some drops of Universal Indicator (UI) into the test tube. 3. Observe and record the color result and pH. 4. Added 10 ml of water and few drops of Universal Indicator (UI) into the test tube. 5. Stopper before shook the test tube to inflate the water (H2O) with the oxygen (O2). 6. Record the color result
Bibliography: Irwin, Debbie, Patrick Garnett and Ross Farrelly. Chemistry Contexts: Preliminary, 2nd Ed. Melbourne: Pearson Education Australia, 2006. Print. "Ionic vs. Covalent Substances - Hands-on Classification MiniLab." Ionic vs. Covalent Substances - Hands-on Classification MiniLab. N.p., n.d. Web. 24 Mar. 2013. <http://www.learningfront.com/mergenthaler/pages/upshur_1.html>.