جميع النماذج الاسترشادية كيمياء لغات للصف الثالث الثانوي 2026.. الأسئلة المتوقعة

تزايدت معدلات البحث عن جميع النماذج الاسترشادية كيمياء لغات للصف الثالث الثانوي 2026 التي تهدف إلى مساعدة الطلاب في مراجعة المنهج الدراسي بالكامل، إذ تمثل هذه النماذج محاكاة واقعية للامتحانات الرسمية وتعمل على كسر حاجز التوتر لدى الطلاب قبل دخول لجان الاختبار في نهاية العام الدراسي الحالي.

النماذج الاسترشادية كيمياء لغات تالتة ثانوي

تأتي هذه النماذج الاسترشادية لتكون أداة فعالة للطلاب، حيث توفر تغطية شاملة للمفاهيم الكيميائية الأساسية وتدريبات مكثفة على المسائل العلمية المعقدة، ويسهم هذا التدريب المنظم في تحسين الأداء الأكاديمي للطلاب، كما يساعدهم على إدارة الوقت بذكاء داخل اللجان الامتحانية، مما يعزز من فرصهم في الحصول على درجات متميزة.

الأسئلة:

An element from the first transition series, one of its compounds is used in dyes. Which of the following choices represents the electronic structure of this element's ion in this compound?
A) [Ar] 4s¹ 3d⁵
B) [Ar] 3d³
C) [Ar] 4s² 3d³
D) [Ar] 3d¹
Which of the following expresses the electronic distribution of a non-transition element ion?
A) X³⁺: [Ne] 3s²3p⁶
B) Y²⁺: [Ar] 3d⁶
C) Z²⁺: [Ne] 3s²3p⁶
D) W³⁺: [Kr] 4d⁷
Four test tubes X, Y, Z, and W, each contain a salt solution as shown in the following table: V(NO₃)₅ (Ar) 3d⁰, Ti(NO₃)₃ 3d¹, Fe(NO₃)₃ 3d⁵, Mn(NO₃)₂ 3d⁵. Which of these tubes should be covered in order to not change the composition of the solution inside it?
A) X
B) Y
C) Z
D) W
Two consecutive transition elements (X) and (Y), from the first transition series contain the same number of electrons in the (3d) subshell. Which of the following is true?
A) The effective nuclear charge of element (X) is greater than the effective nuclear charge of element (Y)
B) The radius of element (X) is smaller than the radius of element (Y)
C) The radius of element (X) is equal to the radius of element (Y)
D) The repulsion between the (3d) electrons of element (X) is less than the repulsion between the (3d) electrons of element (Y)
Which of the following describes the change that occurs to siderite ore when heated in air?
A) Its mass increases and percentage of iron increases in it.
B) Its mass decreases and percentage of iron increases in it.
C) Its mass decreases and percentage of iron decreases in it.
D) Its mass increases and percentage of iron decreases in it.
Which of the following expresses the effect of the gas produced by the reaction of dilute hydrochloric acid with sodium sulphite?
A) It turns a paper wet with potassium dichromate solution to green.
B) It does not remove the color of acidified potassium permanganate solution.
C) It turns a paper wet with lead acetate solution to black.
D) It turns a paper wet with starch to yellow.
Which of the following reactions produces a precipitate?
A) Hydrogen sulphide gas with lead (II) acetate solution.
B) Sodium thiosulphate solution with brown iodine solution.
C) Sulphur dioxide gas with acidified potassium dichromate solution.
D) Sodium nitrite solution with acidified potassium permanganate solution.
When hot concentrated sulphuric acid reacts with salt (X), a gas that difficult to be oxidized by acid is released, and when the same acid reacts with salt (Y), a gas that is partially oxidized is released. Salts (X) and (Y) are:
A) Sodium chloride and Sodium iodide.
B) Sodium bromide and Sodium iodide.
C) Sodium nitrate and Sodium carbonate.
D) Sodium chloride and Sodium sulphate.
When barium chloride solution is added to salt solution (X), a white precipitate forms that dissolves in dilute acids, and when lead II acetate solution is added to salt solution (Y), a white precipitate forms. Which of the following expresses the anions of salts (X) and (Y)?
A) Phosphate and Sulphate.
B) Phosphate and Sulphide.
C) Sulphate and Phosphate.
D) Chloride and Sulphate.
From the following diagram: White ppt (CaSO₄) --(Diluted sulphuric acid)--> X²⁺ --(Sodium carbonate solution)--> White ppt (CaCO₃). Which of the following represents cation (X²⁺)?
A) Ca²⁺
B) Cu²⁺
C) Mg²⁺
D) Fe²⁺
From the following graphs: Which of the following statements is correct?
A) Graph(X): Kc=1, the backward reaction is the predominant.
B) Graph(Y): Kc=1, the forward reaction is the predominant.
C) Graph(X): Kc>1, the forward reaction is the predominant.
D) Graph(Y): Kc>1, the backward reaction is the predominant.
In the following equilibrium reaction: Ca(OH)₂(s) ⇌ CaO(s) + H₂O(v). Which of the following changes leads to an increase in the mass of calcium oxide?
A) Reducing the mass of calcium oxide by half.
B) Withdrawal 10 mL of water vapor.
C) Doubling the mass of calcium hydroxide.
D) Adding 10 mL of water vapor.
50 mL of a 0.2 M ammonium hydroxide (NH₄OH) solution was diluted by adding 450 mL of distilled water. What is the dissociation degree (α) of the solution after dilution?
A) 0.03
B) 0.0095
C) 0.2
D) 0.0009

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