The relationship between life and science, science and life

Everyone has to go through such stages and such things, and in the process, people harvest hopes and dreams, especially young people. Youth is one of the best times in life, full of changes, with improvements and surprises every month of the year. Therefore, it is very necessary to look at life from the perspective of chemistry and guide life with chemical principles, because chemistry is a science about material changes and has a certain universality.

Practice has proved that such a choice and arrangement is reasonable and very beneficial.

Science, the meaning of learning by subject, refers to the study of various knowledge through detailed classification and research, forming a gradually complete knowledge system. It is about discovering the practice of invention and creation, and it is about human exploration.

With the advancement of the times, science and technology are becoming more and more developed, and our lives are becoming more and more convenient. Maybe some people think that science is so far away from us, that we don't need to learn it, that we don't need to pay attention to science.

In fact, science is all around us, and our clothing, food, housing and transportation are inseparable from science. For example, brightly colored fabrics need to be scientifically treated and dyed; The harvest of grains and vegetables requires the rational use of fertilizers, pesticides and herbicides; Cement, rigid materials, glass, plastic and other chemical products are important building materials; Gasoline, diesel fuel is the fuel of many modern means of transportation; These are inseparable from science, so to study science is to learn life.

Nowadays, the scientific use of energy has become an important topic of scientific research. Oil and coal are very precious energy sources, but petroleum products and if they are burned only as fuel, it would be a pity, for this reason, chemical scientists have done a lot of research. The larger molecules in fuel oil are cracked into smaller molecules, which can then be processed into a variety of products.

By heating the isolated air of coal to thousands of degrees Celsius, the coal can be decomposed into coke oven gas, crude ammonia, coke and coal tar, etc., and can also be further made into various useful products.

However, the development of science has also brought about many environmental problems. Currently, most cars run on gasoline or diesel. Some of the substances they produce when they are burned, such as carbon monoxide, unburned hydrocarbons, nitrogen oxides, lead-containing compounds and soot, etc., will be emitted into the air with the exhaust gas, causing air pollution.

Therefore, in order to reduce automobile exhaust pollution, there are also some measures: improve the combustion mode of the engine so that gasoline can be fully combusted; Use a purification device to convert harmful gases into harmless substances; Use unleaded gasoline and prohibit the discharge of leaded substances; Increase the monitoring of exhaust gas and prohibit failure to meet environmental protection standards'Cars on the road.

Science is developing, and the times are advancing. One of the reasons for the rugged and difficult road to the deep sea is that the pressure in the deep sea is unbelievably high, and it is a high-tech problem for people to dive into the deep sea. In 2012, China's self-researched Jiaolong manned submersible dived into the deep sea of 7km and knocked on the door of this mysterious "Dragon Palace".

That's what science is all about.

Science is all around us, and it is closely related to our livesWe must be good at perceiving every detail, paying attention to all small phenomena, and learning to think about the mysteries and contribute to scientific research. Learning science is learning life, *** said to study for the rise of China, and now, we have to study science for the development of China.

Science Experiment - "Spit Eggs".

In the third period of Chinese class on Friday afternoon, the teacher carried out an activity entitled "Science is Amazing" with the topic of composition in Unit 3. Everyone prepared the materials one by one, and only five of them participated, performing separately: "The Needle Swimming on the Back", "The Egg Floats", "Water in the Paper Cup", "The Egg Bubbles", and "The Handkerchief That Can't Be Burned", among which I am most familiar with "Egg Foaming".

Because I did this experiment)

The first ingredients to prepare are: eggs, cups and vinegar. Ready, let's start the experiment!

First pour the vinegar into the cup, then put the egg into the vinegar, after soaking for a while, the egg will slowly "blow" bubbles, like a child blowing bubbles in water. It's like saying, "It's fun."

When the eggs were foaming, the classmates who were sitting upright "flew" up in the blink of an eye. "Yikes! It's really blistering. The students watched and talked a lot. I picked up the bubbling egg in the cup and showed it to my classmates ......

After the performance, the teacher asked me to explain the principle, and I was speechless, I didn't know what to do, and I could only look left and right with a pleading gaze. In the end, he said intermittently: "The principle is ......."Because ............ in eggshellsContains ......Calcium......It's ...... with vinegarAfter soaking, carbon dioxide gas is produced.

The real principle is that after the egg is soaked in vinegar, the calcium carbonate in the eggshell will react with the vinegar to produce carbon dioxide gas. These gas bubbles around the eggshell will burst continuously, causing the egg to slowly spin up and spit bubbles, because the chemical reaction makes the egg less dense than water, so the egg will rise and spit bubbles.

That's what it was like – the experiment of "Egg Foaming".

This "science lesson" is amazing!