Why is burning of magnesium ribbon considered a chemical change?
Answers
Answer:
Magnesium ribbon is a elemental form,after burning in the presence of oxygen in air , it changes to magnesium oxide that is a powder form as there is a formation of chemicals there is a breakdown of chemical bond. so it is considered as chemical change.
Answer :
Burning of magnesium ribbon considered a chemical change.
Explanation :
When magnesium ribbon is burnt, a new substance is formed, named magnesium oxide, which cannot return to it's original form ( magnesium ). Therefore, it is a permanent and irreversible change. There is also changes its mass after and while burning. Energy is also given out in the form of heat and light. So, it is said to be a chemical change.
More Information
When magnesium ribbon burns with a dazzling white light and changes to ash. The white ash is called magnesium oxide. Magnesium reacts with oxygen and forms magnesium oxide.
Chemical change
- The change is permanent and cannot be reversed by simple physical methods.
- New substances with different properties are produced.
- Energy is either evolved or absorbed.
- There is a change in mass of the substance.
- The composition of the substances changes.
Some more examples :
- Cooking of vegetables.
- Burning of coal.
- Respiration.
- Ripening of fruits.
- Germination of seeds.