The following power generation processes use chemical changes: A
A Thermal power generation, which relies on burning fuel to produce electricity
B Hydropower production, which relies on the potential energy contained in water to produce electricity without chemicals Changes
C Wind power production relies on wind power, not of chemical changes
D Geothermal energy production, relies on geothermal energy, not chemical changes
The following energy conversion processes, through chemical changes , reach A. Geothermal energy production b. Nuclear reaction to produce electricity C. Thermal energy production D. Wind energy production
A. No new substances are generated during wind energy production, which constitutes a physical change.
B. During the processIn the process of thermal power generation, new substances such as carbon dioxide are generated, which constitutes a chemical change and is not in line with the concept of "low carbon economy".
C. No new substances are generated during the hydroelectric power generation process, which constitutes a physical change.
D. No new substances are generated during the solar energy production process, which constitutes a physical change.
Then choose: B.
| C |
| Analysis: Chemical modifications are Refers to changes in the formation of new substances. Physical changes are changes in which no new matter is produced. The essential difference between chemical changes and physical changes lies in the generation of new substances. Solutionion: A. No new substances are generated when using geothermal energy production, which constitutes a physical change B. No new substances are generated when using nuclear reactions; to produce electricity, which is located inside the core. The changes do not belong to the research field of chemical changes; C. In the process of using thermal energy to produce electricity, coal and other substances must be burned. .Coal combustion can generate carbon dioxide and other substances, which is a chemical change; D , In the process of using wind energy to generate electricity , no new substances are generated, which constitutes a physical change. Then choose C. Comments: To answer this question, you need to analyze whether new substances are being generateded during the change. If new substances are generated, this is a chemical change. |