Tests for cations (Edexcel GCSE Chemistry): Flashcards
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Definition of cations
Definition of cations
Positively charged ions formed when atoms lose electrons
Flame color of
Flame color of
Crimson red
Flame color of
Flame color of
Yellow
Flame color of
Flame color of
Lilac
Flame color of
Flame color of
Orange-red
Flame color of
Flame color of
Blue-green
+ NaOH precipitate
+ NaOH precipitate
White (insoluble in excess)
+ NaOH precipitate
+ NaOH precipitate
White (insoluble in excess)
+ NaOH precipitate behavior
+ NaOH precipitate behavior
White ppt, soluble in excess NaOH
+ NaOH precipitate color
+ NaOH precipitate color
Blue (insoluble)
+ NaOH precipitate color
+ NaOH precipitate color
Green (turns brown on standing)
+ NaOH precipitate color
+ NaOH precipitate color
Brown
+ NaOH precipitate behavior
+ NaOH precipitate behavior
White ppt, soluble in excess NaOH
Issue with Na flame in flame test
Issue with Na flame in flame test
Yellow flame is intense and can mask other colors