Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


Well you can take a candle, light it and cover it with a glass, You'll notice that the candle will stop lighting. As we know that oxygen is needed for burning, and the glass stopped the supply of air which has oxygen needed for burning. 
This shows that their is oxygen in air. (:
2 5 2

the experiment of atmospheric oxygen is required for burning...

1. take a potted plant

2.cover few leafs with a plastic

you will notice that the leave has become dead in lack of oxgen

1 5 1
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts