Testing Flashcards
1
Q
How do you test for hydrogen?
A
When metals react with acid, bubbles of gas are produced. The squeaky pop test shows that this gas is hydrogen. When an acid reacts with a metal the hydrogen produced makes a lighted splint go pop, because the hydrogen reacts with the oxygen.
2
Q
How do you test for carbon dioxide?
A
When a carbonate reacts with an acid it gives off carbon dioxide. The presence of carbon dioxide is tested using limewater. Carbon dioxide is present when the limewater turns cloudy from the carbon dioxide that travelled through the delivery tube.
