One way to determine if a change is physical is if the substance changes its form or appearance without altering its chemical composition. For example, melting or freezing a substance, dissolving it in water, or changing its state of matter are all physical changes.
it is physical change as you are not adding new chemicals and your are only changing the shape and it is revers able because once you open it you can close it again so it is definitely physical.
no don't be silly. it is a physical change because you are able to change it back to its original state. :)
No it is a physical change because it can be sewn back together and changed. A chemical change would mean tha it couldn't be undone like burning oil. The oil one would not be able to get back.
Heating sugar is a chemical change because it causes the sugar molecules to break down into simpler forms, resulting in the caramelization of sugar. This process involves the rearrangement of atoms and the formation of new substances.
Hardness a physical or chemical
Yes, it is a physical change. For if it was a chemical change, it would not be able to change back; but when you are just changing the state of the item/substance it can be changed back.
Yes, it is a physical change. For if it was a chemical change, it would not be able to change back; but when you are just changing the state of the item/substance it can be changed back.
Temperature is the perception we have of the vibrational energy of the molecules in any substance. The faster they vibrate, the hotter the object. So the answer is physical.
It is a chemical reaction and is undo able
It is a chemical reaction and is undo able
If you have auditory-tactile synesthesia you might be able to feel music in the form of a physical touch.
it is physical change as you are not adding new chemicals and your are only changing the shape and it is revers able because once you open it you can close it again so it is definitely physical.
No. Parrots are house pets and are not able to do tasks around the house. They might be able to mimic the sound of the voices in the house, but they are not able to be helpful in physical tasks.
yes they can because if you freeze water that doesn't prevent you from being able to change the water back into its original state
It wont be able to produce the things we need. If the air is Polluted a tree wont be able to make C02.
A physical change; more water vapour has joined the cloud, making it thicker and less able to allow light through.
People will be able to vote in languages other than English.