Step 1: Prepare the Test Tube:
- Take a clean and dry test tube. Make sure it is completely free from any moisture.
Step 2: Obtain a Glowing Splint:
- Light a wooden splint and blow out the flame. This should leave behind a glowing ember or splint.
Step 3: Insert the Glowing Splint:
- Carefully insert the glowing splint into the test tube. Ensure that the glowing part of the splint is inside the tube.
Step 4: Observe the Splint:
- Observe the glowing splint closely. Pay attention to any changes in the glowing intensity or color.
Observations:
- Oxygen Present: If oxygen gas is present in the test tube, you will observe that the glowing splint bursts into a flame. This is because oxygen supports combustion, causing the glowing ember to ignite into a flame.
- Oxygen Absent: If oxygen is not present in the test tube, the glowing splint will not ignite and will eventually extinguish due to a lack of oxygen.
Precautions:
- Be cautious when handling the lit splint and test tube to prevent burns or accidents.
- Note: Other methods to check for oxygen presence include using a glowing match, a burning piece of paper, or a lit candle, but the glowing splint method is commonly used due to its simplicity and reliability.
