People often say, "If you don't eat, drink the northwest wind!" "It used to be a mockery, but now it's a dream come true." Ma Yanhe and his team at the Tianjin Institute of Industrial Biotechnology of the Chinese Academy of Sciences realized the artificial synthesis of starch using carbon dioxide for the first time, and published the research results in the international authoritative academic journal "Science" in the early morning of September 24. Rounding means that the air can really be eaten as a meal.
The researchers devised a new synthetic route that requires only 11 core biochemical reactions to complete the carbon dioxide-to-starch transition. Theoretically, a 1 cubic meter bioreactor could produce the equivalent of five acres of starch per year.
With this technology, human beings no longer rely on the sky to eat, as long as there is enough energy, there will be enough food. This technology allows the carbon emitted in the air to return to the cycle of production and life, not only can recycle carbon dioxide, but also produce the food that human beings rely on for survival, which can be described as killing two birds with one stone.
This time the knowledge of chemistry can be regarded as a great achievement. At a time when mathematics, physics and chemistry are gradually seizing the popularity of emerging disciplines, people have begun to believe that "learning mathematics, physics and chemistry well, and walking all over the world is not afraid".
However, chemistry has always been a headache for many students, complex chemical reaction equations, unclear periodic tables, chemical valence that will be miscalculated if you are not careful... Even before you learn, you are scared away by the word chemistry, such as hearing that cosmetics and skin care products contain chemical ingredients, you must not buy it.
In fact, the propaganda that "no chemical ingredients" is not rigorous. Any substance is made up of atoms, and nothing is "free of chemicals." Merchants advertise that there are no chemical ingredients, but just want to emphasize that the product is "natural, pure, and does not hurt the body".
The risks and difficulties of over-selling fear, over-interpreting chemistry, are not credible. In fact, chemistry is closely related to us, and it is not as boring as we think, and it can even be super interesting.
In the new book "Chemistry Super Interesting" by Shandong Literature and Art Publishing House, it explains the phenomena related to chemistry in our lives with interesting points of view, and infiltrates and explains the relevant chemical knowledge.
1 Stimulate learning motivation with interest, chemistry is super fun
The most surprising thing about the book "Chemistry Super Interesting" is that it uses vivid and interesting language to explain a lot of chemistry knowledge in a simple and concise manner, which is fascinating.
For example, atoms are very abstract, the book says that atoms can be regarded as kindergarten children, and the atoms of the 118 elements on the periodic table are like 118 children with different appearances and personalities.
In analyzing why atoms react to each other, author Chen Weijun said that it is like a child who is not satisfied with the number of toys they have, plus the electrons are quite light and distributed in the outermost positions of the atoms, so when two atoms meet, the electrons are often reduced to "trading" chips.
Atoms like fluorine and chlorine are born with poor personality, look at what others have to "red eyes", like to "snatch" other people's electrons, have more electrons than protons, and become "anions"; there are some atoms like sodium and potassium, which are generous in nature, always contribute their own electrons, and become "cations". Therefore, when chlorine and sodium atoms meet, sodium will actively send electrons to form sodium chloride, which is the main component of table salt.
The author also talked about the hottest new energy problems at present, such as the essence of nuclear power generation is boiling water.
This humorous and witty language style not only makes middle school students feel that chemistry is not a burden, but even children will feel like listening to stories and like chemistry.
2 Use chemical knowledge to dispel rumors and break the "pseudoscience"
Of course, chemistry does not exist only in stories, but also in our daily lives. Take alkaline ionized water, which is often advertised in the media. This kind of water, the merchant advertises is particularly tall, plus the "ion" feels that the value is doubled, and it is said that it is healthier than ordinary, is this the case?
The author also explained it to us. In fact, in nature, anions and cations appear at the same time, so the general mineral water itself is ionized water. The so-called alkaline is the water that is energized and electrolyzed. However, no matter whether the water is alkaline or acidic, after drinking it, it must pass through the stomach and encounter strong acidic stomach acid. The weak alkaline of alkaline water is not worth mentioning at all in the face of strong acids, so it is impossible to regulate the acidity and alkalinity of the system.
Knowing this knowledge, the "pseudoscience" promoted by the merchants is self-defeating. We don't have to spend the money that we've wronged.
In addition, the low-sodium salts sold on the market are irradiated, but because of the radioactive element potassium-40, because we take in low doses, they can be ignored, and they will be metabolized by the human body and will not persist in the body.
Even if people eat the highest amount of radiation on the market for a year, the radiation dose they bear is only equivalent to the cosmic radiation that they fly to and from Taipei and New York, so there is no danger.
People's anxiety caused by lack of relevant knowledge is actually not necessary, when we understand the doorway, we will naturally have a happy life.
<h1 class="pgc-h-arrow-right" data-track="9" >3 Understand some chemical knowledge and improve the quality of life</h1>
The book also talks about some chemical knowledge of "black heart food", in order to make huge profits, good merchants have added some chemical substances that should not appear in food, which seriously threatens people's health, such as poisoned eggs, plasticizers, Sudan red, bleached bean sprouts and so on.
Many times, we inadvertently take these "toxic and harmful" substances into the body. For example, we often use a plastic material called polyvinyl chloride, which is what we often call PVC. PVC is mostly used to make plastic water pipes, and it can also be used to make plastic wrap. The softer the PVC product, the more plasticizer needs to be added. Plasticizers can make the whole softer and more malleable.
It is customary for people to cover food with plastic wrap or plastic bags and heat it in the microwave. Avoid spilling food and staining the microwave. However, if the food has oil, it will dissolve the plasticizer in the plastic wrap, especially at high temperatures.
Among them, there is a plasticizer DEHP, which belongs to the "environmental hormone", also known as "endocrine disruptors", which will affect the body's endocrine system and interfere with growth, metabolism, reproduction and other functions.
For the sake of health, when purchasing plastic wrap, try to choose plasticizer materials with low risk. If you're not sure if you have a plasticizer DEHP, we try to avoid using plastic bags on tableware at night markets and heat food with plastic wrap.
This chemical knowledge can enhance our health and safety awareness and help improve the quality of life.
The book "Chemistry Super Interesting" explains 10 major types of chemical reactions, contains 50 kinds of life experiments, 100 hard-core knowledge, not only rich in content, but also equipped with some brightly colored and appropriate illustrations, making the whole book more vivid.
Interest is the source of learning.
This book can not only be used as an extracurricular reading object to broaden students' horizons, but also as a medium for parents to explain life knowledge to their children, which is very helpful for stimulating children's interest in learning.
It took 3 years to complete, covering 365 beautiful places and 53 professional maps
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