pH meter in orange juice
pH in sodium bicarbonate solution
Digital pH meter
Soil pH meter
Laboratory pH meter
Testing pH
Phenolphthalein a single indicator
Litmus pH indicator in acid and basic
Phenolphthalein at pH9.3
Universal indicator colour range
Phenolphthalein acid-base indicator
Testing pH of soils
Magnesium-acid reaction
Effect of pH on action of amylase
Methyl orange in acid
Lithium chloride burns with a bright crimson flame
Sodium chloride burns with a bright yellow flame
Limestone-acid reaction
Acids react with alkalis producing a salt
Limestone and acid
Red cabbage pH indicator
Detecting acid formation
Litmus solution added to acid
Benzoic acid precipitate
Salol crystals on a chilled microscope slide
Measuring jug and bulb pipette
Neutralisation reaction
Litmus paper test on a lemon
Universal indicator test on a lemon
Universal indicator test on an orange
Litmus paper test on an orange
Litmus paper test
Acid-base indicators
Cabbage as pH indicator
Test for chlorine
Cobalt (II) chloride solution
Iron (III) chloride solution
Copper (II) chloride solution
Universal indicator
Potassium chromate and silver nitrate
Soxhlet extractor
Digital colorimeter
Digital colorimeter with cuvettes
Digital colorimeters with cuvettes
Reading a burette
Copper (II) sulphate crystals
Calcium reacting with water, initial stage
Calcium reacting with water, later stage
Plasticine ball and marbles in tank of water
Transition element salts in solution
Placing jam jar over lit candle in dish containing water
Measuring pH
D-(-) alanine, molecular model
Plant acid-base indicator
The ammonia test
Positive ammonia test
Poitive ammonia test
Methyl orange
Litmus indicator
Phenolphthalein indicator
Bromothymol blue indicator
Blackcurrant juice indicator
Potassium permanganate titration
Potassium reacting with water
De-colourised bromine water
Ammonia test
Reading a burette of permanganate
Battery and steel wool
Starch content of leaves
Cut apple
Magnesium burning in air
Salol crystals on a microscope slide
Titrating a reactant from a burette
Loudspeaker and microphone
Making a reactant solution
Transferring a reactant into a flask
Iron (II) hydroxide precipitation
Iron (III) hydroxide precipitation
Grinding natural rock salt
Iron (II) chloride solution
Ethanal and Brady's reagent
Formation of Lead (II) iodide
Universal indicator papers
Electrostatic attraction
Wave diffraction
Wave interference
Hydrometer
Hand pouring a jug of water into container of oil and syrup
Small clear glass filled with water up to a green line
Light dispersion experiment
Rates of reaction experiment
Soil sample being tested for pH
Detecting an alkali
Methyl orange indicator
Soil settling out of water
Tin in sulphuric acid
Salol cooling rapidly to form crystals
Measuring acidity
Litmus solution added to alkali
Iron salts in solid and liquid forms
Simple light bulb circuit
Conductivity of a glass rod
Conductivity of a metal spoon
Variable resistance box
Zero-centre ammeter
Rheostat
Potentiometer jockey
Simple circuit with motor
Parallax demonstration
Copper-silver metal displacement reaction
Optics of camera with no lens
Electroscope
Electrometer
Recrystallised rock salt
Filtering rock salt solution
Magnetic repulsion
Magnetic attraction
Dipping magnet in iron filings
Orbital phases demonstration
Weighing an apple
Magnetic field
Magnesium ribbon in ethanoic acid
Using a 'makeshift' calorimeter
理科の実験(クラフト)
Universal indicator paper
Colour range of Universal Indicator
Colourimeter cuvettes with beetroot