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Разработка урока по химии "Определение молярной массы лабораторного газа"
| Lesson Plan Grade Level: 11 Subject: Chemistry Teacher Name: Darkul Tiyessova Unit Topic: [/l]Determination of the Molar mass of lab gas. Time Frame: 90 min. Learning Goal(s): Students will be able: • to determine the molar mass of lab gas using lab equipment. Number of Students: 29 Instructional Objectives:(statements of expected learner outcomes) Students will be able to: * explain what the Molar mass mean * name the unit of the Molar mass * use the Ideal gas equation * measure the mass and volume using electronic balance and measuring cylinder Assessment of each objective Formative assessment – answer the questions: * What does “Molar mass” mean? * What is the unit to measure Molar mass? * Ideal Gas Equation: ____________ * Why do we need to use IGE for gases? * What the value for R (the gas constant)? * In the worksheet you are given Air density? Why density? Connection to standards: IB DP Chemistry 1-4-7. Solve problems using the ideal gas equation, PV = nRT. Procedures/Activities: (include direct, guided, and independent activities) * Engaging: example of Avogadro constant = the number of 200 cm3 beakers of all water on the Earth * Introduction to the task: how to use the Ideal gas equation to determine the Molar gas of lab gas * Practical work: remind about safety rules. Materials needed: * Electronic balance * Measuring cylinder * Rubber tubing * Flask * Stopper * Lab gas * Worksheet for students * Laptop and LCD projector Assessment/Closure: (method of review and evaluation of the lesson) Summative assessment: report on practical work will be assessed against DCP (Data collection and processing) and CE (Conclusion and evaluation) criteria of IB DP. Oral reflection: what was the most challenge in this practical work? What kind of error you have to take into account when calculating the Molar mass in this practical work? What can you do different in order to improve your results? | |
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Понедельник, 2024-11-18, 7:19 PM
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