Reaction of Sodium and Water, Darija Gazdek, 3.d - Coggle Diagram
Reaction of Sodium and Water
Equipment and chemicals
knife and tweezers
piece of sodium
candle and matches/lighter
beaker and water
phenolphtalein and dropper
Collect the gas formed due to progression of reaction in test tube.
Expose the gas to candle flame to test its flamability.
Cut a piece of sodium and put it into water in beaker.
Add phenolphtalein to newly formed solution in beaker.
Fill the beaker to about half with water.
The exothermicity of reaction causes sodium to melt.
Hydrogen gas extinguishes the candle's flame and reacts with oxygen in air, exploding and producing pop sound.
Sodium circles across water's surface pushed by the hydrogen gas and gains spherical form.
Phenolphtalein changes colour to purple in solution in beaker, thus proving that sodium hydroxide was formed.
Sketch of the experiment
Reaction of sodium and water
Reaction of hydrogen and oxygen
Sodium hydroxide is proved by change in colour of indicator phenolphtalein into purple, meaning it's an alkali.
Hydrogen gas is proved by pop test: extinguishing the flame and, as reacting with oxygen in an explosion, producing squeaky pop sound.
Reaction of sodium and water produces sodium hydroxide and hydrogen gas.
Darija Gazdek, 3.d