Khi nào cần may áo giáp sắt? Mẹo hay và dễ nhớ môn Hóa

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Chemistry is a very difficult subject, and troublesome for students. I’m sure many of you don’t understand the specifics when to sew iron armor. Let’s find out good tips with GiaiNgo right in this article.

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When to sew iron armor?

When to sew iron armor is a saying that helps to quickly remember the chemical reactivity series of metals. The full sentence is When you need to sew iron armor, remember to go to the street and ask the African shirt shop.

The chemical activity series of metals: K, Ca, Na, Mg, Al, Zn, Fe, Ni, Sn, Pb, (H), Cu, Hg, Ag, Pt, Au.

In there:

K is Potassium;

Ca is Calcium;

Sodium is Sodium;

Mg is Magnesium;

Al is Aluminum;

Zn is Zinc;

Fe is Iron;

Ni is Nitrogen;

Sn is Tin;

H is Hydrogen;

Cu is Dong

Hg is Mercury;

Ag is Silver;

Pt is Platinum;

Au is Gold.

In addition, you can also memorize through other sentences such as when you need her to sew iron armor, remember to go to the street to ask A Phi Au shop’ or ‘when the whole family sews iron armor, remember to go to the street with A Phi Au brand name’. .

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See more:

Some good tips to remember about Chemistry

Just now you have learned the content of when to sew iron armor. Next, invite you and Giai Ngo to come up with some easy-to-remember tips about Chemistry.

Tips for remembering the prefix

A chemical prefix is ​​a part of the name of that chemical formula. The chemical prefix represents the number of atoms of an element present in that molecule

The most common prefixes:

  • 1 is Mono
  • 2 is Go
  • 3 is Tri
  • 4 is Tetra
  • 5 is Penta
  • 6 is Hexa
  • 7 is Hefxan
  • 8 is octane
  • 9 is Nonan
  • 10 is Dean

Normally, people would omit Mono if Mono was at the beginning of the name.


P2O5 is called Di Phosphorus – Penta Oxide;

SO2 is called Sulfur – Di Oxide;

SO3 is called Sulfur Tri Oxide;

N2O3 is called Di Nitrogen Tri Oxide.

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Tips to remember by writing poetry

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Atomic Poems

British hydrogen is a (1).

Twelve (12) carbon columns.

Nitro fourteen (14) round.

Oxygen fatigues sixteen (16).

Sodium is clever.

Jump to two three (23).

Make magnesium close to home.

Embarrassed for twenty-four (24).

Two seven (27) aluminum shouts.

Sulfur won three two (32).

Being different from other people is really talented.

Chlorine thirty-five and a half (35.5).

Kali likes three nine (39).

Calcium continues forty (40).

Five five (55) laugh manga.

Iron here then five six (56).

Sixty-four (64) copper angry.

By sixty-five (65) zinc deficiency.

Eighty (80) Bromine lies.

Silver cents hundred and eight (108).

Bari heart bored.

One three seven (137) what use.

What’s wrong with people?

Two and seven (207) uncle lead.

Mercury two and one (201)

Chemotherapy poem

Potassium (K), Iodine (I), Hydrogen (H).

Sodium (Na) with silver (Ag), chlorine (Cl) one species.

It’s chemotherapy I.

Remember to write it down carefully so you don’t have to wonder.

Magnesium (Mg), zinc (Zn) with mercury (Hg).

Oxygen (O), copper (Cu), tin (Sn) add barium (Ba).

Finally add the word calcium (Ca).

Chemotherapy II remember nothing difficult!

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This aluminum (Al) valence III times.

Deep memory when needed immediately.

Carbon (C), Silicon (Si) here.

Having IV chemotherapy is never forgotten.

Iron (Fe) is often annoying.

II, III we have to remember each other.

Met nitrogen (N) miserable again.

I , II , III , IV when the time is up V.

Sulfur (S) sometimes plays pranks.

Down II to IV when then VI always.

Phosphorus (P) refers to zero residue.

If anyone asked, yes, V.

Please try to study hard.

Year-round chemotherapy song to use.

Periodic table poems with ordinal numbers from 1-30

Sunset at the North pool (H, He, Li, Be, B).

Suddenly remember in the South (C, N, O, F, Ne).

Morning sun covered with fog (Na, Mg, Al, Si, P).

But who does not install (S, Cl, Ar, K, Ca).

Enjoying singing and dancing early in the evening (Sc, Ti, V, Cr, Mn).

Must have music with trumpet (Fe, Co, Ni, Cu, Zn).

Poems of valence series

Group IA: Hai, Li, Come, No, Pour, Ca, Fe (H, Li, Na, K, Rb, Cs, Fr).

Group IIA: Ball, Mouth, Fish, Crocodile, Break, Teeth (Be, Mg, Ca, Sr, Ba, Ra).

Group IIIA: Dad, Ai, Neck, Inh, Tai (B, Al, Ga, In, Tl).

Group IV: Uncle, Wholesale, Call me, Sang aim, Beef noodle soup (C, Si, Ge, Sn, Pb).

Group V: House, Phuong, Eat, Live, Secret (N, P, As, Sb, Bi).

Group VI: Mr, Say, Sin, Te, Po (O, S, Se, Te, Po).

Group VII: Yes, Chi, Baby, Love, Anh (F, Cl, Br, I, At).

Group VIII: Hang, Nga, Eat, Khuc, Bone, Dragon (He, Ne, Ar, Kr, Xe, Rn).

It's nice to have a good time

No matter how complicated chemistry is, just have these ‘mantras’ and effective methods and they will become extremely easy to remember and memorize.

Recently, Giai Ngo shared with you the knowledge to answer the question of when to sew iron armor. Follow GiaiNgo every day to read more useful articles.


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