1. 20 examples of diffusion phenomena
The 20 examples of diffusion phenomena are as follows:
1. In summer, lotus flowers are fragrant.
2. Spray perfume in the corner of the room and the whole room will be fragrant.
3. The aroma of cooking can be smelled outside the window.
4. If red ink is dropped into clear water, the entire glass of water will turn red.
5. You can smell the smell of disinfectant when entering the hospital.
6. You can smell the fragrance of flowers far away from the flower bed.
7. When salt is put into a glass of water, the whole glass of water becomes salty.
8. Press two different pieces of metal together. After a long time, the components of the other metal can be found inside the contact surface of each piece of metal.
9. You can smell a bad smell in the toilet.
10. The corners where coal has been piled for a long time have turned black.
11. Air freshener spreads fragrance to all parts of the house.
12. Secondhand smoke affects everyone in the room.
13. The spread of poisonous gas.
14. There is a bouquet of lilies in the vase, and there is a faint floral fragrance in the room.
15. You can quickly smell the sour smell of vinegar when you open the vinegar bottle.
16. A thick layer of wall in the corner where lime has been placed for a long time has been dyed white.
17. When burning gas, you can smell the gas.
18. The mothballs gradually became smaller in the box, and there was a camphor smell in the box.
19. Water evaporates and becomes less and less.
20. If light-colored and dark-colored clothes are washed together in the washing machine, they will become stained.
Extended information:
(1) Diffusion definition: When different substances come into contact with each other, the phenomenon of entering each other is called diffusion. The essence of the diffusion phenomenon is the mutual penetration of molecules (atoms).
(2) The phenomenon of diffusion shows that the molecules of all substances are constantly moving irregularly, and it also shows that there are gaps between the molecules of substances.
(3) Factors affecting diffusion: The higher the temperature, the faster the diffusion (that is, the irregular movement of molecules is related to temperature, and the higher the temperature, the more violent the irregular movement of molecules).
Reference materials: Sogou Encyclopedia: Diffusion Phenomenon 2. Idioms and poems talking about science
A. "The wind blows the willow flowers and fills the shop with fragrance" means that particles containing the fragrance of willow flowers move to people nose, indicating that the particles are constantly moving. Therefore, the explanation is correct; B. "Pine leaves can be used as wine, how much can we make in spring?" This sentence involves wine making. Wine is made from rice and other grains. After a long time, It comes from the fermentation. The whole process is a slow oxidation reaction. Therefore, the explanation is correct; C. "The body is broken into pieces and the bones are not afraid" refers to the process of mining limestone from the mines in the mountains. The mined limestone is calcined at high temperature before it becomes Powdered quicklime is a chemical change process. So the explanation is wrong. D. Steel refers to an alloy of iron with a carbon content of less than 2%. The principle of steelmaking is to use pig iron as raw material to try to reduce its carbon content. So the explanation is Correct; therefore choose C.. 3. Poems about physics
1. The mountains are reflected in the floating water. Without water, there is no mountain without which one would be enchanted. ——Modern·Wu Mai's "Guilin Landscape"
Physical principles: reflection and refraction of light.
Translation: Mountains stand in the water, and there are reflections of the mountains in the water. There is no mountain that is not attractive, and there is no water that is not attractive.
2. At Hanshan Temple outside Gusu City, the bell rang at midnight to reach the passenger ship. ——Tang Zhang Ji's "Night Parking on the Maple River"
Physical principle: the propagation of sound.
Translation: In the lonely and quiet Hanshan Ancient Temple outside Gusu City, the sound of ringing bells in the middle of the night reached the passenger ship.
3. The green mountains on both sides of the strait face each other, and the lone sail is coming from the sun. ——"Looking at Tianmen Mountain" by Li Bai of the Tang Dynasty
Physical principle: Green hills are stationary relative to the ground, but with a moving boat as a reference, the green hills become moving. With the river bank as a reference, Gufan comes from the sun.
Translation: The beautiful scenery of the confrontation between the green mountains on both sides of the Taiwan Strait is indistinguishable. I met a lonely boat coming from the horizon.
4. The beauty of April in the world is gone, and the peach blossoms in the mountain temple are beginning to bloom. ——"Peach Blossoms at Dalin Temple" by Bai Juyi of the Tang Dynasty
Physical principle: The higher the terrain, the slower the temperature rises. In the same season, the temperature on the mountain is lower than that at the bottom.
Translation: In April in the human world, all the flowers have withered, but the peach blossoms in the ancient temples on the mountains have just begun to bloom.
5. The water of the Yellow River comes up from the sky and rushes to the sea never to return. ——Li Bai of the Tang Dynasty, "The Wine Will Be Entered"
Physical principle: water cycle.
Translation: The water of the Yellow River rushes from the sky, and the waves roll straight to the East China Sea, never to return.