The following appliances are used in our daily life, and the energy is obtained by chemical reaction: (1) microwave oven; (2) gas water heater; (3) electric stove; (4) alcohol lamp; (5) solar cooker A. ①②③B. ①④⑤C. ②④D. ②⑤

① There is no chemical change with the help of electromagnetic wave. 2. Chemical change occurs when natural gas is burned. 3. Electric energy is converted into heat energy. 4. Alcohol lamp gets energy by burning alcohol. 5. Solar energy is used

The basic purpose of carrying out chemical research is to obtain useful substances by chemical reactions, and to obtain heat, light and electricity by chemical reactions. Please give examples respectively

The former includes the development of new drugs and new functional materials, while the latter includes the development of various new batteries (solar cells, fuel cells, etc.) and the preparation of new storage materials

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1. The wind power station converts the heat energy of the wind into electricity
2. All electrical appliances can convert electric energy into energy
3. Does the current consume as much power as it does A said that electrician and current are the same physical quantity. There is no difference between them. They are equal in size B: how much work does the current consume Are they all right? B why not? A why not? I'm adding 20 points. Is that ok?
4. When a consumer is connected to the lighting circuit for 5 minutes, the energy consumed is 3.3 × 10 to the fifth power J, then the current passing through the consumer is（ When a consumer is connected to the lighting circuit for 5 minutes, the consumed electric energy is 3.3 × 10 to the fifth power J, then the current passing through the consumer is () a
5. The simplest circuit consists of four parts, which are the power supply of (), the wire that converts electric energy into other forms of energy (), () and the control circuit The simplest circuit consists of four parts: the power supply of (), the wire that converts electric energy into other forms of energy (), and the wire that controls the circuit on and off
6. From the positive side of the power supply to the negative side, the electric energy will be consumed along the way, so the current eye circuit gradually weakens. Right, why
7. The circuit in which the current comes out of the positive pole of the power supply and directly returns to the negative pole of the power supply without passing through the electric appliance is called the circuit
8. What are the following ways of energy conversion It's warm to eat food in winter Stir the water in the cup to make it warm Electric oven food
9. Electrolytic water experiment I want to do the electrolytic water test! But I don't know how many volts the power supply needs to be qualified! Is the ordinary 1.5V dry battery OK?
10. Problems in the experiment of electrolyzing water In the electrolytic water experiment, there are three glass tubes a, B and C. tube a is positive, tube B is negative, and tube C is filled with water, which can flow to the positive and negative stages, that is, the one in the middle of them. Excuse me, when the power is on, what is the phenomenon in tube C? What is the reason for the phenomenon?
11. After the invention, people will be able to convert other forms of energy into electricity on a large scale
12. What can be converted into what can be converted into what can be converted into when the battery is used for external power supply? What can be converted into what can be converted into when the generator is used for power generation?
13. How can inductors convert the stored magnetic energy into electrical energy and send it back to the power supply? The pure inductor does not consume energy. In the first and the third quarter cycle, P is positive, and the capacitor takes electric energy from the power supply and converts it into magnetic energy, which is stored in its magnetic field; in the second and the fourth quarter cycle, P is negative, Inductive elements convert the stored magnetic field energy into electric energy and send it back to the power supply. How can inductive elements convert the stored magnetic field energy into electric energy and send it back to the power supply? Also, if the pure inductance does not consume energy, where does the electromagnetic torque come from? Because the stator winding of the motor is also pure inductance, Electric energy is converted into magnetic energy, and then magnetic energy is converted into electric energy. How can there be electromagnetic torque output?
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16. What is the specific process of wind power generation?
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