10 chapters live, each a 60-minute lesson built around DSE question types.
Level
Chapter
Guide
S1
S1 science lab safety and six common pieces of apparatus: reading six hazard symbols and the action each one demands, the use and one forbidden use of each item, a three-step method for reading a 10 mL measuring cylinder, and four rules for heating a test tube
S1 science states of matter and the particle model: a three-column frame (arrangement, spacing, motion) that explains shape and volume, compressibility and diffusion, plus the two plateaus on a heating curve (melting at 0 degrees C, boiling at 100 degrees C)
S2 Science electricity and circuits: telling current from voltage, adding resistors in series, why parallel resistance is smaller than the smallest resistor, charge Q equals It, and what a fuse is for
S2 Science acids, alkalis and neutralisation: indicator colours, why one pH step is a tenfold change, the products of neutralisation, titration amounts and three everyday uses