Which beakers contain a saturated solution? Whiteboard exercise Play

Which metal ions produce acidic solution? Animation Play

Why animals reproduce sexually Animation Play

Why are water solutions of metal salts usually acidic? Animation Play

Why does copper not displace zinc from a solution of a zinc salt? Animation Play

Why does dissolving electrolytes in water cause them to dissociate? Animation Play

Why does zinc displace copper from solutions of copper salts? Animation Play

Why salts of strong acids and strong bases produce neutral solutions Animation Play

Why salts of weak acids and strong bases produce alkaline solutions? Animation Play

Why two acids or bases of equal concentrations may have different pHs Student activity Play

Writing and solving the equation Student activity Play

Wrong steps in reasoning Student activity Play

Wrong steps in reasoning Whiteboard exercise Play

Yoko's and Lena's number Whiteboard exercise Play

Yoko's number Whiteboard exercise Play