Chemistry Year 11 Notes May 2026

A thermometer crying ice cubes (endothermic: absorbs heat, feels cold) and a thermometer on fire (exothermic: releases heat, feels hot). His caption: “Endo = enters cold. Exo = exits hot.” Simple. He’d never forget that now.

A sketch of two nerdy atoms sharing a single pair of glasses. Caption: “Sharing is caring.” Right. Covalent bonds share electrons. Water, oxygen, methane—all just atoms playing nice because neither wants to lose or gain. Sharing keeps them stable.

“Right,” Alex muttered. “This is useless.” chemistry year 11 notes

The next day, the exam had a question: “Explain, using particle theory, why a solid melts when heated.”

Alex had drawn two stick figures: a metal (sweating, holding a sign that said “+”) and a non-metal (smug, holding “-”). The caption read: “They fight until they attract. Then they become a compound—and chill.” Suddenly, Alex remembered: metals lose electrons (become cations, positive), non-metals gain (anions, negative). Opposites attract. Table salt isn’t magic; it’s just sodium and chlorine finishing each other’s… electron shells. A thermometer crying ice cubes (endothermic: absorbs heat,

Alex smiled. He turned to the back of his notebook in his mind—page 42. A stick figure melting into a puddle. Caption: “Heat gives particles energy. They vibrate. They escape. Solid becomes liquid. No magic. Just physics in slow motion.”

He wrote his answer. He passed.

A battlefield. Reactants on the left, products on the right. A tiny general shouting: “WHAT YOU START WITH, YOU END WITH!” Conservation of mass. You can’t create or destroy atoms—just rearrange them. Alex had written: “Coefficients are your friends. Subscripts are lies (don’t change them).”