What is the operation when adding alcohol to the alcohol lamp?

Open the lid (not nonsense).

Pick up the porcelain lamp plug and tilt it to the side, never take out the lamp, take a short-diameter funnel and put it on the lamp, pour alcohol along the funnel, not less than 1 3 of the lamp, and not more than 2 3 of the lamp.

Remove the alcohol bottle and funnel, put the porcelain lamp stopper, and close the lid (not nonsense).

Open the lid and take out the lamp from the mouth of the alcohol lamp along with the cap.

Then slowly pour the alcohol to be injected into the bottle.

Up to two-thirds of the volume of the alcohol lamp.

to prevent too much alcohol from escaping and causing danger.

When finished, close the lamp and cap.

If alcohol spills during infusion, wipe with a damp cloth.

Organize your supplies.

Hey. Open the lid (nonsense).

Hold the mouth of the alcohol bottle tightly and slowly tilt the bottom of the alcohol bottle upwards (to put it bluntly, you are pouring the alcohol in).

P.S. Alcohol volume between 1 3 2 3 (safe practice) with a lid on (again nonsense).

If there is an outflow of alcohol, it is best to rinse it cleanly

It's okay, hehe, I won't narrate, it's like this at the junior high school level

Hello. 1. Turn off the lights.

2. Add no more than two-thirds and more than one-half of alcohol.

3. Cover the lamp cap to prevent volatilization.

Remove the center of the lamp to the point where the alcohol does not exceed two-thirds of the volume of the bottle and cover the center of the lamp.

1. Turn off the center.

2. Add alcohol.

3. Cover the lamp center.

Hello to Pilu.

1. Turn off the lights. 2. Add no more than two-thirds and more than one-half of alcohol.

3. Cover the lamp cap to prevent volatilization.

a. The addition of alcohol does not exceed two-thirds of the volume of the alcohol lamp, and cannot be filled to prevent fire, so A is wrong;

b. Use a match to light the alcohol lamp, and you can't use a burning alcohol lamp to prevent fire, so B is correct;

c. When heating the substance, the external flame should be used to heat the substance, and the internal flame part should not be used to heat the substance, so C is wrong;

d. When extinguishing the alcohol lamp, use the lamp cap to extinguish it to prevent fire, so D is wrong so choose B

A funnel is used to add alcohol to the alcohol lamp, and the amount of alcohol in the lamp should not exceed two-thirds of the volume of the alcohol lamp. When the alcohol in the alcohol lamp pot is less than its volume 1 4, alcohol should be added. The alcohol should not be too full, and it is advisable not to exceed 2 3 of the volume of the light pot.

Because the amount of alcohol is too small, there is too much alcohol vapor in the kettle, which is easy to cause deflagration.

If the amount of alcohol is too much, it will expand by heat, which will easily cause the alcohol to overflow and cause accidents. Be sure to use a small funnel to avoid spilling the alcohol. If the alcohol lamp is lit, the flame must be extinguished if alcohol is to be added.

It is never allowed to add alcohol when burning, otherwise, it is easy to catch fire and cause accidents.

Use a dropper to suck up the alcohol and drip it into the alcohol lamp, not too full, until it is two-thirds of the alcohol lamp. However, it is better to use a funnel, which is more convenient and fast.

To add alcohol to the lamp, a funnel is used, and a dropper is usually not used.

(1) It is absolutely forbidden to add alcohol to a burning alcohol lamp, and adding alcohol to a burning alcohol lamp will ignite the alcohol in the lamp, so the answer is alcohol combustion

2) Some of the drugs that are not used are toxic, some are corrosive, and they are discharged into the sewer and will pollute the environment, so the answer is environmental pollution, corrosion of sewer pipes, etc

3) When heating the beaker containing liquid, the beaker will be heated unevenly without an asbestos net, so the answer is that the beaker will burst

4) When the liquid in the test tube is heated, the liquid may be ejected when boiling, so the answer is that the liquid is sprayed and burns others

5) When weighing the substance of unknown quality, the weighing object is placed on the right disk, and the weight is placed on the left disk, according to: m left = m right + m game code, moving the game code, which is equivalent to adding the weighing object to the right plate, so the answer is large

Remove the lamp cap and light the alcohol lamp with a match; heating of the substance with an external flame; Cover the alcohol lamp with a lamp cap.

Alcohol cannot be added to a lit alcohol lamp. It is not possible to light another alcohol lamp with a lit alcohol lamp.

Alcohol lamp plus alcohol can not exceed 2 3, can not directly use 1 alcohol lamp to point another, when heating, the test tube mouth is aimed at no one's place, the test tube clamp is clamped 1 3 away from the test tube mouth.

In the event that it is extinguished, the mouth of a plain (rather than long-necked) glass funnel is inserted from the wick side, and then a flask containing alcohol can be poured directly into the funnel.