Past Papers — Igcse Chemistry

Chemistry isn’t just about memorizing the reactivity series or knowing how to balance an equation. It’s about . Examiners often use specific "command words" and look for exact keywords in your answers.

25.0 cm³ of 0.100 mol/dm³ hydrochloric acid neutralises 20.0 cm³ of sodium hydroxide solution. Calculate the concentration of the NaOH solution. HCl + NaOH → NaCl + H₂O past papers igcse chemistry