The logs cellular structure becomes burnt.
It is a physical change, because the wood is still wood but it is in a different form
Although it has physical consequences, burning a log is a chemical change. The molecules of the log react with oxygen to form carbon dioxide, water steam, and many other products. A simple, fairly reliable test to tell the difference between physical and chemical changes is: Can the process be reversed rather easily? If the answer is yes, like dissolving salt in water, it is a physical change; if no, a chemical change.
When a log burns, it undergoes a chemical change because the molecules in the log are breaking apart and rearranging to form new substances like ash, smoke, and gases. This process involves the combustion of the wood as it reacts with oxygen in the air to produce heat and light.
Burning a log in the fireplace involves a chemical reaction because it undergoes combustion, reacting with oxygen to produce heat, light, and new chemical compounds like carbon dioxide and water vapor. Sawing a log in half is a physical change where the log is simply being cut into smaller pieces without any chemical reactions occurring.
No, it is a physical change. If you think about cutting the wood, the pieces will be smaller than the log, but they will have all of the same properties as they did when they were put together. An example of a chemical change is burning the wood. The act of burning it would be a chemical change since it is converting the wood into carbon and water vapor.
Burning the log is a chemical change. All of the others are physical changes.
Splitting a log with an axe is a physical change. The log is being physically divided into smaller pieces, but its fundamental chemical composition remains the same.
no. it is a chemical change.
It is a physical change, because the wood is still wood but it is in a different form
chemical
Do the logs change from wood to some other substance? No, so it has to be a physical change.
Although it has physical consequences, burning a log is a chemical change. The molecules of the log react with oxygen to form carbon dioxide, water steam, and many other products. A simple, fairly reliable test to tell the difference between physical and chemical changes is: Can the process be reversed rather easily? If the answer is yes, like dissolving salt in water, it is a physical change; if no, a chemical change.
Yes, carbon from the log combines with the air to form co2.
yes
When a log burns, it undergoes a chemical change because the molecules in the log are breaking apart and rearranging to form new substances like ash, smoke, and gases. This process involves the combustion of the wood as it reacts with oxygen in the air to produce heat and light.
No, it's a chemical change. A physical change is one which can be reversed. Like ice to water to ice etc.
Melting is a physical change.