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A student tests which gas is produced in a reaction using a glowing splint - OCR Gateway - GCSE Chemistry: Combined Science - Question 3 - 2019 - Paper 3
Question 3
A student tests which gas is produced in a reaction using a glowing splint. The gas re-lights the glowing splint. What is the name of the gas? A Carbon dioxide B... show full transcript
Worked Solution & Example Answer:A student tests which gas is produced in a reaction using a glowing splint - OCR Gateway - GCSE Chemistry: Combined Science - Question 3 - 2019 - Paper 3
Step 1
What is the name of the gas?
Answer
The gas that re-lights a glowing splint is oxygen. This is a classic test for the presence of oxygen, as oxygen supports combustion. When a glowing splint is placed in a test tube containing oxygen, it will burst into flames, indicating that the gas is indeed oxygen.