"Laboratory Preparation and Properties of Carbon Dioxide" PPT Courseware 2

Description

"Laboratory Preparation and Properties of Carbon Dioxide" PPT Courseware 2

1. The status and role of teaching materials

This lesson is mainly about how to prepare carbon dioxide in the laboratory and verify the properties of carbon dioxide. It occupies a very important position in the entire teaching material system. In addition, learning this lesson well will play an extremely important role in cultivating students' ideas such as drug selection, device design, and experimental methods when preparing certain gases in the laboratory.

2. Analysis of teaching objectives

Knowledge and skills

1. Practice laboratory preparation of carbon dioxide and use upward air exhaust method to collect gas

2. Deepen our understanding of the properties of carbon dioxide

Process and Method

Through students' hands-on experiments, students' abilities to observe, do hands-on, and analyze experiments are cultivated.

Emotional attitudes and values

(1) Through experiments and problem discussions, cultivate students’ scientific qualities of being realistic, innovative, and cooperative.

(2) Through cooperative learning between teachers and students, and between students, and research-based learning, we can experience the fun of successful inquiry and stimulate students' desire to explore.

3. Teaching focus and difficulties

Focus: How to produce carbon dioxide in the laboratory

Difficulty: Deepen our understanding of the properties of carbon dioxide through exploratory experiments

study law

1. Experimental inquiry method: discover and analyze problems through inquiry, thereby improving problem-solving abilities.

2 Cooperative learning method: Let students prepare experiments in groups and discuss in groups, so that students can learn from each other's strengths and weaknesses in communication and cultivate students' sense of cooperation and competition.

3. Independent learning method: Guide students to use real-life experience and reading of textbooks to summarize methods for producing carbon dioxide in the laboratory and verification methods of properties, mobilize students' enthusiasm for thinking, and enable students to acquire knowledge independently.

Feel the carbon dioxide

Ask the students to exhale together and feel the carbon dioxide around us. Can we use exhalation to collect a bottle of carbon dioxide in the laboratory? --Introducing the general ideas and methods for producing gases in the laboratory.

Research on the physical properties of CO2

experiment one

color, state, smell

Experiment 2

——Density and carbon dioxide do not burn and do not support combustion

Observation: In the experiment, did the lower candle go out first, or the upper candle? Why?

Chemical properties of CO2

(1) CO2 does not burn and does not support combustion:

Experiment → Student Communication Phenomenon, Summary

(2) CO2 cannot be supplied for breathing:

Use multimedia to display pictures of these properties of CO2.

Consolidation exercises

Basic - application - exploratory

1. Among the following descriptions of the properties of CO2, which one is correct (A)

A. CO2 can dissolve in water to form H2CO3 B. CO2 is acidic

C. CO2 is flammable under certain conditions D. CO2 is toxic

2. Many people in northern rural areas have cellars in their homes to store vegetables. Due to the respiration of vegetables, they contain a large amount of CO2 gas. Therefore, before entering the cellar, people often do a "light experiment": put a burning candle into the cellar first. If you see the candle extinguished, it proves that there is There is a large amount of CO2 gas and it is not suitable to enter. When you see that the candle does not go out, it proves that there is less CO2 gas inside and you can enter.

3. In order to make the walls plastered with lime mortar [Ca(OH)2] dry quickly, people often build a charcoal brazier indoors. Why is this? Why does the wall become damp when I start to put the charcoal brazier?

Answer: Charcoal burns to generate CO2, and CO2 reacts with lime slurry "Ca(OH)2" to generate calcium carbonate and water, so the wall can dry faster. At the beginning, water formed and the walls became damp.

Laboratory preparation and properties of carbon dioxide

1. General ideas and methods for producing gases in the laboratory

2. Methods for producing carbon dioxide in the laboratory

3. Properties of carbon dioxide

6. Reflection

In the teaching design of this class, I mainly adopt a teacher-guided, student-centered, teacher-student collaboration, experiment-based, and thinking-focused cooperative inquiry teaching format, focusing on two manifestations and four highlights.

Two manifestations:

Reflect the teaching philosophy of quality education in the new curriculum reform

Reflect students’ learning style of independent inquiry

Four stand out:

Guide scientific discovery based on experiments

Taking thinking as the core to carry out problem exploration

Taking students as the main body to promote knowledge internalization

As a group, construct a study on chlorine environment

Keywords: Laboratory Preparation and Properties of Carbon Dioxide Teaching Courseware, Hunan Education Edition Ninth Grade Chemistry PPT Courseware Download, Ninth Grade Chemistry Slide Courseware Download, Laboratory Preparation and Properties of Carbon Dioxide PPT Courseware Download, .PPT format;

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Update Time: 2024-08-02

This template belongs to Chemistry courseware Hunan Education Edition Ninth Grade Chemistry Volume 1 industry PPT template

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