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18 Cards in this Set

  • Front
  • Back
How can you identify group 1 and group 2 metals?
Flame Tests
What colour flame does lithium have?
Bright red
What colour flame does sodium have?
Golden yellow
What colour flame does potassium have?
Lilac
What colour flame does calcium have?
Brick red
What colour flame does barium have?
Green
What solution can be used to identify different metal ions depending on the precipitate that is formed?
Sodium hydroxide solution
What do ammonium ions produce when sodium hydroxide solution is added and warmed?
Ammonia :)
How can you identify carbonates?
By adding a dilute acid, this produces CO2 gas.
How do you identify halides?
By adding nitric acid and silver nitrate solution, this produces a precipitate of silver halide
How do you identify sulfates?
By adding hydrochloric acid and barium chloride solutin to produce a white precipitate of barium sulfate
How do you identify nitrates?
By adding sodium hydroxide solution and a little aluminum powder to produce ammonia gas
What happens to organic compounds when we heat them?
The burn or char, inorganic substances do not
How can you work out the empirical formula of an organic compound?
From the radio of the products produced when it burns
How can we detect a carbon-carbon double bond?
Using bromine water
What are some key things that modern instrumental techniques depend on?
Electronics and computers (these provide fast, accurate and sensitive ways of analysing chemical substances)
What can be used to analyse and identify the chemical elements in a sample?
Atomic absorption spectroscopy (AAS)and mass spectrometry
How can you seperate compounds in a mixture?
By using chromatography