5 examples of chemical change because of the presence or absence of oxygen
Answer (1)
Answer:1. Rusting of Iron: Iron forms rust (iron oxide) when exposed to oxygen and moisture.2. Burning of Wood: Wood burns in the presence of oxygen, producing ash, carbon dioxide, and water vapor.3. Respiration: Cells convert glucose into energy, carbon dioxide, and water using oxygen.4. Decomposition of Hydrogen Peroxide: Hydrogen peroxide breaks down into water and oxygen when exposed to light.5. Tarnishing of Silver: Silver reacts with sulfur compounds in the air, leading to tarnish, a reaction influenced by the presence of oxygen.
