Group 1 and group 17 reactivity trends

Chemia IBPaper 2, maj 2026, TZ1wzorowane4 pktotwarteśrednie (szac.)

Zadanie 2c

(i) Write the equation for the reaction of Rb with water, H₂O, including state symbols. (ii) Describe the type of bonding in Rb and in H₂O, and explain how the valence electrons in each produce that type of bond.

Chemia IBPaper 2, maj 2026, TZ2wzorowane5 pktotwarteśrednie (szac.)

Zadanie 3c

Sodium reacts vigorously with water. (i) Write an equation, with state symbols, for the reaction of sodium with water. (ii) Describe one observation from the reaction in (i). (iii) Sketch, on the axes below, an energy profile for this reaction. Label the…

• Materiał graficzny

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

Zadanie 3b

(i) Outline why the strength of the metallic bond increases from potassium, K, to calcium, Ca. (ii) Write an equation for the reaction of potassium, K, with water, including state symbols. (iii) Outline why the electronegativity of chlorine is greater than…

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

Zadanie 11

Which row correctly describes how the properties of the halogens change down group 17, listed in the order: non-metallic character, boiling point of the element, atomic radius? A. Increases, increases, increases B. Decreases, increases, increases C. Decreases,…

Chemia IBPaper 1A, maj 2025, TZ3wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 13

Which pair of elements reacts together most vigorously? A. Sodium and bromine B. Potassium and bromine C. Sodium and chlorine D. Potassium and chlorine

Chemia IBPaper 1A, maj 2025, TZ1wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 16

Which pair of elements would react together most vigorously? A. Na(s) and I₂(s) B. Cs(s) and I₂(s) C. Na(s) and F₂(g) D. Cs(s) and F₂(g)

Chemia IBPaper 2, specimen 2025wzorowane2 pktotwarteśrednie (szac.)

Zadanie 3a

Sketch, on the axes, the graphs of the time for complete reaction against the mass of metal that you would expect for sodium and for potassium. Label each line.

• Materiał graficzny

Chemia IBPaper 2, listopad 2024wzorowane5 pktobliczenioweśrednie (szac.)

Zadanie 2d

Calcium reacts with water to form calcium hydroxide solution and hydrogen gas. Ca(s) + 2 H₂O(l) → Ca(OH)₂(aq) + H₂(g) (i) Use the thermochemical equations in the table to calculate the enthalpy change, in kJ, when 8.00 g of calcium reacts completely…

• Tabela do uzupełnienia

Chemia IBPaper 3, maj 2023, TZ2wzorowane1 pktotwarteśrednie (szac.)

Zadanie 1e

Estimate the atomic volume, in cm³ mol⁻¹, of element 20.

Chemia IBPaper 1, maj 2023, TZ2wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 8

Which properties decrease down group 17, the halogens? I. electronegativity II. first ionization energy III. melting point A. I and II only B. I and III only C. II and III only D. I, II and III