Guided practicals mapped to grade and topic. Open one to read the theory, then start the lab.
26 experiments
Get to know the bench: measure 50 mL of water, transfer it and take its temperature.
Dissolve salt in water, then heat the solution until the water has gone and crystals remain.
Mix sodium chloride and silver nitrate solutions, then separate the precipitate by filtration.
Add zinc to blue copper(II) sulfate solution and watch the colour fade as copper is displaced.
Make blue copper(II) hydroxide, then heat it and watch it decompose to black copper(II) oxide.
Compare an acid, an alkali and water using universal indicator and a pH meter.
Add an alkali to an acid until phenolphthalein turns pink, and feel the heat of neutralization.
Titrate a hydrochloric acid sample against 0.100 M sodium hydroxide and calculate its concentration.
React zinc with dilute hydrochloric acid and identify the gas with a burning splint.
React marble chips with dilute hydrochloric acid and test the gas given off.
Decompose hydrogen peroxide with a manganese(IV) oxide catalyst and test for oxygen.
Identify sodium, potassium, lithium and copper compounds by the colour they give to a flame.
Weigh a metal block in air, in water and in salt solution to find the upthrust and the density of the metal.
Time a pendulum at several lengths, plot T² against length and find g from the slope.
Load a spring step by step, measure its extension and find the spring constant.
Pull a loaded block along a bench at steady speed and find how friction depends on load, surface and area.
Vary the current through a resistor, record current and voltage, and find its resistance from the V–I graph.
Measure two resistors separately, then joined in series and in parallel, and compare with the formulas.
Trace a ray through a rectangular glass slab at several angles and verify Snell’s law.
Focus the image of an object on a screen for several object distances and find the focal length.
Drop a hot metal block into cool water, measure the final temperature and work out the specific heat capacity of the metal.
Soak potato cylinders in sucrose solutions, measure the change in mass and find the concentration of the cell sap.
Use an eyepiece graticule at different magnifications to measure the real length of plant and animal cells.
Move a lamp towards a water plant and count the oxygen bubbles to see how light limits photosynthesis.
Learn the four standard food tests on known samples, then work out which nutrients an unknown food contains.
Time how fast amylase digests starch at different temperatures and pH values, and find its optimum.