"Rational Utilization and Development of Fuels" Fuel and its Utilization PPT Courseware (Lesson 1)

Description

"Rational Utilization and Development of Fuels" PPT courseware on fuels and their utilization (Lesson 1), 22 pages in total.

Introduction of new courses

The combustion of fuel produces heat. So, is heat only obtained through combustion?

New lesson explanation

1. Energy changes in chemical reactions

Summary: While chemical reactions generate new substances, they are also accompanied by changes in energy. Changes in energy are usually manifested as changes in heat. From the above experiments, it can be seen that the reaction between quicklime and water releases heat.

Common endothermic and exothermic reactions

Exothermic reaction

combustion reaction

Reaction of metals with acids

The reaction between calcium oxide and water

endothermic reaction

reaction between carbon dioxide and carbon

reaction of calcined limestone

2. Utilization of fossil fuels

Based on the pictures below, can you tell what fossil fuels include?

Coal, oil, and natural gas are called fossil fuels and are non-renewable energy sources.

1. Coal and oil

2. Natural gas

3. Rational utilization and development of fossil energy

4. Methods to promote full combustion of fuel

Summary

1. When a substance undergoes a chemical reaction, it is accompanied by a change in energy, which is usually manifested as a change in heat, that is, an exothermic or endothermic phenomenon occurs.

2. Fossil fuels, including petroleum, coal, natural gas, etc., are important energy sources.

3. To achieve full combustion of fuel, two points are usually considered: first, there must be enough air during combustion; second, there must be a large enough contact surface between fuel and air.

Reinforcement exercises

1. Which of the following directly uses chemical changes to generate energy ()

A. Use explosives to split stones B. Use rice cookers to cook

C. Sunlight melts snow D. Hydropower generation

2. Which of the following statements goes against scientific facts ()

A. Fractionation of petroleum, gasification, coking and liquefaction of coal are all physical changes

B. Coal, oil, and natural gas are the three most important fossil fuels in the world today. They are mixtures

C. Burning large amounts of fossil fuels will cause the “greenhouse effect”

D. Ignition of impure hydrogen may cause an explosion

Homework

Learn about the "West-East Gas Transmission" project and its role and significance by reading books, newspapers, surfing the Internet, and visiting.

Keywords: Free download of PPT courseware for the ninth grade of Chemistry from the People's Education Press, PPT download on the rational utilization and development of fuels, PPT download on fuels and their utilization, .PPT format;

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Update Time: 2024-10-04

This template belongs to Chemistry courseware People's Education Press Ninth Grade Chemistry Volume 1 industry PPT template

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