1.1 - Flame Tests (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the purpose of a flame test?
What is the purpose of a flame test?
To identify metal ions by flame colour
What colour flame is produced by lithium compounds?
What colour flame is produced by lithium compounds?
Deep red
What colour flame does sodium produce?
What colour flame does sodium produce?
Yellow
What flame colour indicates the presence of potassium?
What flame colour indicates the presence of potassium?
Lilac
What colour flame is observed with copper compounds?
What colour flame is observed with copper compounds?
Blue-green
Which metal produces a yellow-green flame?
Which metal produces a yellow-green flame?
Barium
What colour flame does strontium produce?
What colour flame does strontium produce?
Red
Why is concentrated hydrochloric acid hazardous?
Why is concentrated hydrochloric acid hazardous?
It is highly corrosive and irritates lungs
How do you know the wire is clean before testing?
How do you know the wire is clean before testing?
No colour is emitted when heated
Why do metals produce characteristic flame colours?
Why do metals produce characteristic flame colours?
Electrons emit light when returning to lower levels
How can contamination be avoided when using wire?
How can contamination be avoided when using wire?
Use separate wires or clean with HCl
Will sodium sulfate and sodium chloride produce the same flame colour?
Will sodium sulfate and sodium chloride produce the same flame colour?
Yes, the metal ion determines the colour