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chemical tests ! - Coggle Diagram
chemical tests !
gas tests
chlorine
- bleaches damp litmus paper , turning it white
oxygen
- relights a glowing splint
hydrogen
- makes a 'squeaky pop' with a lighted splint
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ammonia
- turns damp red litmus paper to blue
water
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pure substance ??
defined physical properties :
- boiling point : 100°C
- freezing point : 0°C
flame tests
- clean a platinum wire loop by dipping it into hydrochloric acid
- dip the nichrome wire loop into a sample of the metal compound and then put it in the clear blue part of the bunsen flame.
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carbonates
dilute acid
- if carbonate is present , the mixture will fizz as the carbonate ions will react with the acid and produce carbon dioxide
- to test for carbon dioxide , bubble it through limewater.
( turns milky - CO2 is present )
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