Gases and Biochemical Reactions Flashcards
What are the reactants to prepare oxygen gas?
-Hydrogen peroxide
-Manganese dioxide (catalyst)
What are the products when preparing oxygen gas?
-Oxygen gas
-Water
What is the word equation to prepare oxygen gas?
Manganese Dioxide
Hydrogen Peroxide ——> water + oxygen gas
How can you test for oxygen?
-Light a glowing splint and blow it out
-Place the glowing splint into the test tube
-If oxygen is present the glowing splint will relight
What are the reactants to prepare carbon dioxide?
-Hydrochloric acid
-Calcium carbonate
What are the products when preparing carbon dioxide?
-Carbon Dioxide
-Salt
-Water
What is the word equation when preparing carbon dioxide?
Hydrochloric acid + Calcium carbonate (marble chips) —> Carbon dioxide + salt + water
How can you test for carbon dioxide?
-Mix the gas with limewater
-If the water remains colourless, carbon dioxide is not present
-If the water turns milky, carbon dioxide is present
What are the reactants to prepare hydrogen gas?
-Any acid (Hydrochloric acid)
-Any metal (Zinc)
What are the products when preparing hydrogen gas?
-Hydrogen gas
-Zinc chloride (Salt)
What is the word equation to prepare hydrogen gas?
Hydrochloric acid + Zinc —-> Zinc chloride + Hydrogen gas
How can you test for hydrogen gas?
-Place a glowing splint into a test tube
-If Hydrogen gas is present, it will make a pop sound
