The ionic model

Umiejętności w tym dziale

Umiejętności z tego działu sprawdza 37 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 26 z 54 arkuszy w bazie.

Zadania z tego działu: 37 Otwórz w wyszukiwarce z filtrami

Chemia IBPaper 2, maj 2026, TZ1wzorowane2 pktotwarteśrednie (szac.)

Zadanie 1c

The final step can be summarized as: 3 NO₂(g) + H₂O(l) → 2 HNO₃(aq) + NO(g) ΔH^⊖ = −138 kJ mol⁻¹ Describe the types of bonding found in the concentrated aqueous nitric acid product.

Chemia IBPaper 2, maj 2026, TZ3wzorowane5 pktotwarteśrednie (szac.)

(i) Magnesium burns in oxygen according to the equation $\ce{Mg(s) + 1/2 O2(g) -> MgO(s)}$ . Explain, using electron configurations, how ions are formed by magnesium and oxygen and how these ions form a compound. (ii) Explain, using electron configurations, why…

Chemia IBPaper 1A, maj 2026, TZ1wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 6

What is the correct formula of calcium phosphide? A. Ca₃P₂ B. Ca₂P₃ C. CaPO₄ D. Ca₃(PO₄)₂

Chemia IBPaper 1A, maj 2026, TZ2wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 6

Which compounds contain ionic bonds? I. SiO₂ II. CH₃COONa III. MgO A. I and II only B. I and III only C. II and III only D. I, II and III

Chemia IBPaper 1A, maj 2026, TZ3wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 6

Chrome alum has the formula KCr(SO₄)₂ ⋅ 12 H₂O. Which option shows the charges of the ions that make up this salt, in the order potassium, chromium, sulfate? A. K⁺, Cr²⁺, SO₄²⁻ B. K⁺, Cr³⁺, SO₄³⁻ C.…

Chemia IBPaper 1A, maj 2026, TZ1wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 7

Which properties are expected for the compound lithium bromide? A. Not soluble in water, low melting point, does not conduct electricity when solid, does not conduct electricity when molten B. Not soluble in water, low melting point, conducts electricity when…

Chemia IBPaper 1A, maj 2026, TZ2wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 10

What is the formula of the compound formed from calcium ions and phosphate ions? A. CaPO₄ B. Ca₃(PO₄)₂ C. Ca₂(PO₄)₃ D. Ca₃PO₄

Chemia IBPaper 1A, maj 2026, TZ2wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 13

Why do halogens form 1− ions? A. Highly exothermic electron affinity, so the atoms gain one electron B. Low ionization energy, so the atoms lose one electron C. High ionization energy, so the atoms gain one electron D. Low electronegativity, so the atoms gain…

Chemia IBPaper 2, maj 2025, TZ2wzorowane11 pktobliczenioweśrednie (szac.)

Zadanie 2b

Gallium forms a sulfate of formula Ga₂(SO₄)₃. (i) Both ionic and covalent bonding are present in this compound. State which particles are held together by each type of bond. (ii) Contrast covalent and ionic bonds in terms of what happens to the valence…

Chemia IBPaper 2, maj 2025, TZ1wzorowane4 pktotwarteśrednie (szac.)

Zadanie 4b

Both ionic and covalent bonding are present in sodium ethanedioate, Na₂C₂O₄. (i) Describe the two types of bonding. Ionic bonding: Covalent bonding: (ii) Deduce a Lewis formula of the ethanedioate ion, C₂O₄²⁻. (iii) State the geometry of the…