What is the nature of dust and what are the characteristics of dust

Dust is generally quite annoying, falling everywhere, and carrying bacteria or viruses, sensitive people will be allergic to it, but if there is no dust in this world, the sky is not blue, it is scattered.

The Tyndall phenomenon can happen.

Physical characteristics: Dust is a solid impurity, with many irregular shapes, mostly angular and gray, brown, black and other colors, and has water absorption. Chemical Properties:

The composition of dust is more complex and sometimes provides acid radicals and metal ions that cause degradation. Some dust is inherently acidic or alkaline, such as sulfuric acid fumes and photochemical fumes. Biological characteristics:

Because mold spores are small in size and drift around with the air, they inevitably attach to dust, making dust an ideal medium, breeding ground, and spreader for microorganisms. <

1. From the point of view of physical characteristics: dust is a solid impurity, with many irregular shapes, mostly angular, with gray, brown, black and other colors, and has water absorption. When there is a large amount of dust in the air and the relative humidity reaches a certain level, water vapor forms water droplets, so the dust is easy to be moistened by water and easy to absorb water.

2. From the perspective of chemical characteristics: the composition of dust is relatively complex, and sometimes it provides acid radicals and metal ions that lead to degradation. Some dust is inherently acidic or alkaline, such as sulfuric acid fumes and photochemical smogs.

3. Biological characteristics: due to the small size of the spores of molds, they drift everywhere with the air, so they inevitably attach to dust, so dust is an ideal medium, breeding ground and spreader of microorganisms.

Dust is characterized by its irregular shape, mostly angular and gray, brown, black and other colors, and has water absorption. When there is a large amount of dust in the air and the relative humidity reaches a certain level, water vapor forms water droplets, so the dust is easy to be moistened by water and easy to absorb water.

Looking at its chemical properties, dust is more complex in its composition, and it can sometimes provide acid radicals and metal ions that lead to degradation. Some dust is inherently acidic or alkaline, such as sulfuric acid fumes and photochemical smogs, and metal oxides and other particles are alkaline.

In addition, due to the small particle size and large surface area, the dust in the dust has a strong adsorption capacity, which can adsorb harmful substances in the air on their surface, and is acidic or alkaline. Dust often contains substances such as clay, which can absorb moisture in the air or in materials made of archives, causing it to undergo a hydrolysis reaction to decompose the adhesive aluminum hydroxide.

Benefits of Dust:

Dust absorbs, reflects, scatters, and refracts light from the sun directly to the earth, and produces wind, snow, rain, dew, glow, and rainbows. Since dust is hygroscopic particles, the water vapor in the air will condense, forming clouds in the sky, and the clouds in the sky also block many harmful rays in the universe from breaking into the earth's surface.

In addition to these benefits, dust condenses water vapor and turns them into droplets.

Although dust has many problems, its contribution is immeasurable, it can enable the earth to gently obtain the sun's energy, and it can also make the atmosphere have enough condensation nuclei to increase the chance of cloud and rain formation; Regulate the temperature of the earth's surface to make it suitable for the survival and reproduction of life.

Question 1: What are the benefits and disadvantages of dust? Benefits::

It allows the earth to gently obtain the sun's energy, and it can also make the atmosphere have enough condensation nuclei to increase the chances of cloud and rain formation; Regulate the temperature of the earth's surface to make it suitable for the survival and reproduction of life. If there is no dust in the atmosphere, the sunlight will not be absorbed, reflected, scattered and refracted, and the sky will be blue, without wind, snow, rain, dew, glow, and rainbow. Since dust is a hygroscopic particle, without its core, the water vapor in the air cannot condense, and it is difficult for clouds in the sky to form, and the surface of the earth will become arid and barren without the cover of clouds, and the weather will either be too hot or too cold.

Without dust, many harmful rays in the universe would break into the Earth's surface unhindered and pose a deadly threat to humans and various living beings.

Disadvantage: Dust is the enemy of human health, so people especially hate it because it carries many bacteria, viruses and insect eggs everywhere and spreads diseases. Industrial dust and fine dust can make workers suffer from a variety of difficult occupational diseases, excessive dust can also cause environmental pollution, affect people's normal life and work, induce human respiratory diseases and so on.

Question 2: What does the role of dust teach you? I realized that we can't judge good and evil by the superficial aspects of living things, because there are two sides to everything.

Question 3: What are the benefits of dust If there is no dust in the atmosphere, the light from the sun directly to the earth will not be absorbed, reflected, scattered and refracted, and the sky will be very blue.

Question 4: What is the main function of dust? Dust is the enemy of human health, so people especially hate it, dust with many bacteria, viruses and insect eggs flying everywhere, spreading the disease of industrial dust, fine dust can make workers suffer from a variety of difficult occupational diseases, too much dust will also cause environmental pollution, affect people's normal life and work, induce human respiratory diseases Dust on computers.

Question 5: What are the disadvantages of dust to people and what are the benefits Disadvantages: polluting the air and the environment, people inhaling too much is not good for the body.

Benefits: Won't let the sun be too dazzling, won't make the ground wet due to dust absorbing water.

1.Dust absorbs, reflects, scatters, and refracts the sun's rays directly onto the ground, and produces wind, snow, rain, dew, glow, and rainbows. Because dust is hygroscopic particles, water vapor in the air can condense, forming clouds in the sky.

The clouds in the sky also prevent many harmful rays from the universe from entering the Earth's surface.

2.In addition to these advantages, dust can also condense water vapor into water droplets.

3.Although the dust has many shortcomings, its contribution is limitless. It allows the Earth to mildly obtain solar energy, and it also provides enough condensation nodules in the atmosphere to increase the chance of cloud and rain formation; Regulate the surface temperature so that it is suitable for the survival and reproduction of life.