Describe a standard test for the following stubstances: a)oxygen gas, b)hydrogen gas, c)carbon dioxide gas.?

Question

Classify the following statements as empirical or theoretical for a) Carbon burns with a yellow flame. b) Carbon atoms react with oxygen molecules to produce carbon dioxide molecules. c)Carbon burns faster if you blow it. d) Global warming results when carbon dioxide molecules absorb infared radiation.

Answer 1

a) Light splinter of wood. Blow out flame until there is a faint glow on the end of the splinter. Plunge glowing splinter into sample gas. If oxygen, splinter flares into vigorous flame.

b) Place lighted splinter at mouth of test tube. If loud "Whoop!" then hydrogen.

c) Pour calcium hydroxide solution, Ca(OH)2, into container. Shake. If clear liquid becomes milky, then carbon dioxide.