Read an unremarkable story for 2 minutes before reciting it:
invade
Once upon a time, there was a rich man who used carp skin to pack carbon and boiled eggs to feed a blessed wet nurse. This family has a beautiful daughter named Guilin, but she has two green front teeth (wow, that's terrible), and later she can only marry a counter-revolutionary named Kangtai. Just got married that day, I was severely pinched by my sister-in-law, that is, the "iron aunt". When my mother was angry, she went into shock.
This is terrible. My parents are suing. Tiegu's father and her brother went into the county grandfather's house at night, stole the seal and ran west to where the fairy lived.
The scenery here is beautiful: the river is blue, with colorful shells, a crow with a goose in a long white scarf. Because I don't like winter, I want to go to the south, and I also remind each other along the way: it's rainy in the south, so pay attention to lightning protection.
Have you finished reading it? Now let's condense the story and recite it again in 6 minutes.
Stress damage
Carp skin holding carbon eggs and nourishing milk
That beautiful Guilin person has green teeth.
Marrying Kangtai is counter-revolutionary.
Iron bones pinch the bride.
The impact of anger
So I'm telling you.
horrible
Dad Yin Ge Yin Xi Ti
Local fairy
(color) colored shells (shells) blue river
But (see) crow (crow) (lead) goose.
Give him a white towel.
Never love winter (daytime)
Lightning protection!
Ok, it's been 8 minutes now, and the periodic table of elements has been memorized, don't you believe it? Then you can use the remaining 2 minutes to compare:
The first cycle: hydrogen and helium invasion
The second cycle: lithium, beryllium, boron, carbon, nitrogen, oxygen and neon-carp skin holding carbon eggs to nourish fu milk.
The third cycle: sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, argon-that beauty Guilin tooth green.
The fourth cycle: potassium, calcium, scandium, titanium, vanadium, chromium, manganese-marrying Kangtai is counter-revolutionary.
Iron, cobalt, nickel, copper, zinc, gallium and germanium-newlyweds with iron-are miserable.
Arsenic, Selenium, Bromine and Krypton-Anger Shock
The fifth cycle: rubidium, strontium, yttrium, zirconium and niobium-so tell you.
Molybdenum, technetium and ruthenium-amazing.
Rhodium, palladium, silver, cadmium, indium, tin and antimony-dad, silver, brother, India and Sidi
Xenon-iodine telluride positioning wizard
The sixth cycle: cesium, barium, lanthanum, hafnium-(color) shell blue (color) river
Tantalum, Tungsten, Rhenium, Osmium —— But (see) Wu (crow) (lead) Lai goose
Iridium, platinum, gold, mercury and lead-a white towel.
Bismuth, polonium and radon-Never love winter (daytime)
The seventh cycle: Rb, Ra, Rb-lightning protection! Memory is the basic condition for people to accumulate knowledge and increase their wisdom. To cultivate students' good memory, the most fundamental thing is to teach students the methods of memory and master the essentials of fast and firm memory. Combined with junior high school chemistry knowledge, the author introduces several ingenious memory methods.
First, the metaphorical memory method.
Metaphorical memorization is a method of using metaphor to concretize abstract things, make abstruse truths simple, and make unfamiliar things familiar, thus enhancing brain memory.
For example, in the experimental step of reducing copper oxide with carbon monoxide, the introduction and extraction of carbon monoxide gas are compared to "leaving early and returning late" and the lighting and extinguishing of alcohol lamps are compared to "leaving late and leaving early".
For example, compare the nature and use of hydrochloric acid to tortoise shell, and compose music to help students remember images. "The tortoise shell of hydrochloric acid has four legs with a head and a tail. The front paws are metals and oxides, and the rear paws are salt and alkali. Topic acid-base indicator, tail rust removal and pharmacy. "
Second, homophonic memory method.
Through homonym, materials can have double meanings. In this way, at the beginning, memory materials are input into the brain in pairs, which are combined with different levels of the existing knowledge structure in the brain, and when memory is extracted, there is naturally one more channel. According to this principle, we can homonymize some scattered, boring and meaningless materials to form novel and interesting sentences, which are convenient for input and extraction. For example:
The elements 1 and 1-20 in the periodic table of memory elements, such as hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, neon, sodium, magnesium, aluminum, silicon, phosphorus, potassium, calcium, sulfur, chlorine and argon, are homophonic "Qinghai". Back from Latin America, Liulin Road. "explanation: Qinghai uses fox skin to pack charcoal, so the animals raised by eggs don't need to be fed. After a trip to Latin America, the forest is shaded by willows. How beautiful the scenery is!
2. The mass fraction of elements contained in the crust is oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium. The homonym is "raising turtle with aluminum and iron cover, which one is not green?" .
3. When water is electrolyzed, the gas generated by positive and negative electrodes is homophonic as "Dad raises sheep". (Anode hydrogen, anode oxygen. )
4. The sequence of metal activity is: potassium, calcium, sodium, magnesium, aluminum, zinc, iron, tin, lead (hydrogen), copper, mercury, silver and platinum. The homonym is "Latin America's fake (begging) beggars, but they like to take care of the light and make a hundred pounds."
5. The boiling point of liquid nitrogen is-196℃, the boiling point of liquid oxygen is-183℃, and the homophonic memory is "an umbrella still leaks". ( 183- 196)
6. When the pH of the acid