Chemical Tests for Gases | GCSE Chemistry Practice
Master the specific tests for identifying common gases in the laboratory.
What gas produces a squeaky pop with a lighted splint?
What is Chemical Tests for Gases | Practice?
"Specific chemical reactions used to identify the presence of oxygen, hydrogen, carbon dioxide, and chlorine."
What color flame does a Sodium (Na+) ion produce?
A student sees a lilac flame during a test. Which ion is present?
Why can a flame test be unreliable if the sample is a mixture of ions?
Gas Identification
Hydrogen: Squeaky pop with a lighted splint.
Oxygen: Relights a glowing splint.
Carbon Dioxide: Turns limewater cloudy when bubbled through.
Chlorine: Bleaches damp blue litmus paper white.
Mistake to Avoid: Don't say "splint" for everything. Oxygen NEEDS a glowing splint; Hydrogen NEEDS a lighted splint.
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