Physical and chemical properties of metals, how metals react with oxygen, water and acids, how to rank them in the reactivity series, displacement reactions, and the thermal stability of compounds.
5 narrated scenes. Press play, listen and read along — the points appear as they are explained. Use ‹ Prev / Next › or the scene bar to jump to any scene.
Why is gold found as a nugget while sodium must be kept under oil? The answer is a single list: the reactivity series.
Narration uses your device’s built-in voice. No sound? Switch to “Captions only” — the captions advance on their own.
Positive ions in layers and a sea of free electrons.
Copy these into your notebook in your own words — that is how they stick.
Conduct heat/electricity; malleable; ductile; shiny; sonorous; dense.
Positive ions in a sea of delocalised electrons.
Metal + O₂ → metal oxide.
K, Na, Ca: cold water → hydroxide + H₂; Mg: steam → oxide + H₂.
Metal + acid → salt + hydrogen.
K, Na, Ca, Mg, Al, C, Zn, Fe, Pb, H, Cu, Ag, Au.
More reactive metal displaces less reactive metal from solution.
More reactive metal → more stable carbonates, nitrates, hydroxides.
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8 items modelled on real CSEC Paper 1 questions. Choose one answer for each, then check. Aim for 80% or better. Work each item on paper first.
Write full answers, then reveal the mark scheme and tick the points you earned (17 marks in total). Show all your working — method marks count. Your answers are saved on this device.
Question 1 [17 marks]
A student investigates the reactivity of four metals: magnesium, zinc, iron and copper.
(a) (a) State three physical properties of metals. [3]
(b) (b) Write the equation for the reaction of magnesium with dilute hydrochloric acid and state two observations. [3]
(c) (c) Arrange the four metals in decreasing order of reactivity. [1]
(d) (d) Explain with an equation what happens when zinc is added to copper(II) sulfate solution. [4]
(e) (e) Write the ionic equation for the reaction in (d) and state which species is oxidised. [2]
(f) (f) State what happens when sodium nitrate and copper(II) nitrate are heated and write the equation for copper(II) nitrate. [4]
Find these in your own past-paper booklets for extra timed practice. Items above are written in the style of these papers; any adapted from a specific question say so.