- a change in color
-a change in odour
-bubbling
-a change of state (eg. solid to liquid, gas to liquid, etc.)
either one or a combination of these things can indicate a chemical change.
Changes from a to b and from b to c may be either physical or chemical.
if there been many chemical changes in the water then it's chemical properties each time will be different and we may not call it water then. it would be a formation of each time , a new compound.....
There are no physical changes. there are only chemical changes.
Reduction !! <3
Do Oreos undertake any chemical changes? Yes. How can Oreo be a chemical changes? Cooking involve chemical reactions, modifications of chemical molecules.
It changes properties.Physical Changes:Physical changes are changes in the appearance but not in the chemical properties. Some physical changes can be undone so the item can be put back to almost its past form.Chemical Changes:Chemical changes are the changes in chemical properties. Chemical changes also change in appearance and/or leave behind traces to prove that a chemical change occurred. Chemical changes create a new substance when they happen, e.g., cooking an egg. Chemical changes cannot be undone as the molecules, patterns and properties have been changed.How to tell them apart:The way to tell the difference between chemical and physical changes is by the changes that it went through. There may be clues that a chemical change appeared because of sound, light, gas production or an odour. A physical change does not involve any of these.
The parts of the tree that burn are undergoing a chemical change. The ashes remaining may or may not have undergone a chemical change, depending on the the chemical bonding that the atoms in the ash had before the tree was burned.
some chemical changes can be reversed but they are hard to reverse usually
yes chemical properties do change a substance physical properties just change the physical shape or look!!!
chemical changes
Cooking food can cause chemical Changes
Not all chemical changes are accompanied by a visible physical change. Most chemical changes however will be accompanied by a physical change.