Question 2
A glowing splint is put into the gas collected in the tube. What happens, and what does it show?
The right answer is the one marked above.
It burns brightly, showing the gas is oxygen. A glowing splint relighting means the gas supports combustion better than air does.
You did this same test in grade 10 on oxygen made in a chemistry lesson. The plant has produced the same gas the chemical reaction did.