chemical
no. it is a chemical change.
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.
It is a physical change, because the wood is still wood but it is in a different form
Burning the log is a chemical change. All of the others are physical changes.
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.
Melting is a physical change.
Do the logs change from wood to some other substance? No, so it has to be a physical change.
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.
freezing an ice cube is actually a physical change, and a burnt log is a chemical change because it is a different substance than it was initially (whatever you do you can't make a burnt log a regular non-burned log again).
No, that would probably be considered a physical change. It is only a chemical reaction its chemical makeup is changed.
No, it's a chemical change. A physical change is one which can be reversed. Like ice to water to ice etc.