Because burnning wood is using energy but breaking is using forces.
When wood burns, it's not wood any more. It turns into smoke, ash, and (maybe) charcoal.
When you break wood, it's still wood.
When you change something into a different substance, that's a chemical change.
Yes, burning a match is considered a chemical change because it involves a chemical reaction that changes the composition of the matchstick and produces new substances like ash, carbon dioxide, and water vapor. This is different from physical changes, which do not alter the chemical composition of a substance.
Burning chemically alters a substance, creating different / new substances as a result. Melting, freezing, and evaporating are all different phases of the same substance.
No, burning wax is an irreversible change. When wax is burned, it undergoes a chemical reaction that changes it into different substances (carbon dioxide, water vapor, and heat) that cannot be easily reversed.
To prove that the burning of a candle is a physical and chemical change, you can observe the physical changes such as the melting of the wax and the formation of soot. Additionally, you can analyze the chemical changes by noting the production of carbon dioxide and water vapor during the combustion process. By observing both physical and chemical changes, you can demonstrate that burning a candle involves both types of transformations.
No, burning a candle is not reversible. When a candle is burned, the wax is melted and the wick is consumed, resulting in irreversible changes to the candle's structure.
Why is it different? No, it isn't. Burning sugar is a combustion process.
No, they are different processes.
Yes, burning a match is considered a chemical change because it involves a chemical reaction that changes the composition of the matchstick and produces new substances like ash, carbon dioxide, and water vapor. This is different from physical changes, which do not alter the chemical composition of a substance.
All burning reactions involve chemical reactions (chemical changes).
Burning
both reactions are redox reactions
Burning chemically alters a substance, creating different / new substances as a result. Melting, freezing, and evaporating are all different phases of the same substance.
Yes, burning (oxidation) is chemical change.
A chemical change is when some thing changes into another energy or substance. It is important to make different things. A example is a piece of wood burning offers heat and light.
- Burning of fossil fuels (or derivatives) in thermal power plants, in buildings, autovehicles, forest fires, etc.
Burning is a chemical reaction with oxygen (oxidation).
I know for sure that it is not, however I'm not quite sure why. Hopefully someone else can explain this.