1. Untitled by Li Shangyin:
"In spring, silkworms will weave until they die, and the wax torch will turn to ash and let it dry."
There are both melting process in physical change and burning phenomenon in chemical change. The composition of candle is paraffin wax, which belongs to saturated hydrocarbon. Exothermic combustion in air can melt solid paraffin into liquid wax droplets.
2. Wang Anshi's January Day:
"The explosion happened a year ago, and the spring breeze sent it to Tu Su."
This is a typical chemical change. Firecrackers are generally made of sulfur and other substances, which react chemically after being ignited to generate new substances such as sulfur dioxide.
3. Liu Kun's Gift for Lu Chen:
"Why do you want to make all kinds of steel and turn it into a winding element?" In fact, "steelmaking" is a process of continuously removing impurities from pig iron to make it pure.
4. Li Bai's Song of Autumn Pu:
"The fire shines on heaven and earth, and the red star is purple."
This poem also describes the scene of metal smelting at that time.
5. Yu Qian's Ode to Lime in Ming Dynasty:
"One thousand hammer dug out, fire shut.
Don't be afraid of being smashed to pieces, leaving innocence in the world. "
It is not easy to mine limestone, which refers to physical changes. In this poem, "burning" refers to the chemical reaction of calcining limestone to produce calcium oxide and carbon dioxide. Coupled with the words "if leisure", people feel that this is not only burning limestone, but also symbolizes that people with lofty ideals are taking their time and treating it as leisure no matter how severe the test is. "Broken into pieces" embodies the changes of the body and expresses the spirit of not being afraid of sacrifice. Keeping the world innocent is the author's straightforward expression and his determination to be a pure and innocent person.
Yu Qian's other object-chanting poem "Ode to Coal": "Digging chaos will bring black gold, and the most profound sun will be saved. Fire will revive spring, and the red furnace will break the night. Ding yiyuan is generated by strength, and the stone remains after death. I hope that the whole life is full of warmth and I will go out of the mountains tirelessly. " The author focuses on the formation, characteristics, properties and main uses of coal in the whole poem, and with the help of
The above is for reference.
2. Those books on science chemistry in senior two, People's Education Edition and Jiangsu Education Edition: Chemistry 1: Inorganic chemistry, mainly the principles and basic methods of chemical experiments, inorganic element chemistry, sodium, alkali metals, chlorine, halogen elements, sulfur, nitrogen, common metals and other chemistry 2: Preliminary atomic structure, preliminary chemical reaction principle, preliminary reaction heat, preliminary organic chemistry, chemistry and sustainable development. Pay attention to chemistry elective course 2- chemistry and technology: science, emphasizing chemical engineering and technology, industrial chemistry and other chemical elective courses 3- material structure and properties: science, related to atomic physics, mainly chemical elective courses such as atomic structure, material composition, material structure and properties, introduction to complex theories, etc. 4- chemical reaction principle: science, related to chemical reaction, reaction heat, entropy change, enthalpy change and electrochemistry. Acid-base neutralization titration (preliminary analytical chemistry) and so on. Elective Chemistry 5- Fundamentals of Organic Chemistry: Science, Basic Organic Compounds and Introduction to Organic Chemistry. Elective Chemistry 6- Experimental Chemistry: The science, principles and methods of chemical experiments that are more in-depth than the compulsory ones are one * * * eight books, and two compulsory books are required, just like arts and sciences. Elective courses depend on the actual arrangement of the education bureau and the school.
I am a sophomore now. What materials should be used in physics, chemistry and mathematics? I don't know what kind of university you want to go to-if you go to one, you can see my recommendation.
If it's not good, you can choose one with a smaller difficulty span. After all, suitability is the most important thing. Hey hey.
I'm a science student, and I'm completely used in chemistry, physics and biology, and teaching material analysis in Wang Houxiong. I'm not so diligent, and my writing is a bit selective. Teaching material analysis is better than May 3rd, and it is very refreshing to do. I didn't use a translation book for the optimization of mathematics and Chinese. If it is a national textbook, not a local textbook, I don't think it is necessary. Of course it has a lot to do with your Chinese teacher. I didn't use the translation book anyway.
Once I practiced a book, but no one always reviewed it. It's good to flip through it occasionally.
I haven't written any English, and my classmates basically use optimization. English is amazing. I don't have to do exercises. I never do my English homework. Sleep in class, play PSP and do other exercises, but my grades have always been A, and occasionally I take the third exam.
When you study not to learn knowledge points, but to learn feelings, then high school English basically doesn't have to move. You can do some things you like in English, such as reading novels and watching movies. It is absolutely enough to cope with high school English.