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When an object or solution changes appearance is it a chemical change?
Wiki User
∙ 11y ago
Not necessarily. When ice melts into water, its appearance changes, since ice is a solid and water is a liquid, but that's a physical change. Both water and ice are H2O, so the chemical composition does not change, making it a physical change and not a chemical change. However, when iron reacts with oxygen to produce rust, its appearance also changes. You end up with iron oxide (a.k.a. rust) which has a different chemical composition than just iron and just oxygen. That's a chemical change. If you end up with something new that you didn't have before, it's a chemical change.
Wiki User
∙ 11y ago
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How can you recognize physical and chemical changes?
A physical change is when a new substance is formed. It changes the appearance. A chemical change affects the composition.
Is boiling potatoes a chemical or physical change?
Physical, because it doesn't change chemical make up it just changes the appearance and texture
Is an apple turning brown physical change?
It is both physical and chemical change as it changes its appearance , and it results in a new substance also
What is the difference between phyical and chemical changes?
A physical change only changes the appearance of an object, it's chemical makeup is still the same. Melting ice doesn't change it to a different object, just a different state. Like if you rip a piece of paper, it's still a piece of paper. But a chemical change changes the makeup of the object. Burning is a chemical change. Once it burns it is no longer paper.
Is cooking caramelized sugar a physical or chemical change?
Yes, as well as a chemical change. It clearly changes (white, granulated sugar and liquid to burned brown sugar and liquid to a sticky [and delicious] substance). It changes from a solution to a syrup!
What is one major difference in a physical change and a chemical change is?
Physical change, changes the appearance or the surface. Chemical change, changes the minerals inside the object. Physical deals with the appearance and the surface. Chemical changes the structure of the minerals inside the object.
How can you recognize physical and chemical changes?
A physical change is when a new substance is formed. It changes the appearance. A chemical change affects the composition.
What is the different of physical change to chemical change?
A physical change is one where just the appearance of something changes and a chemical change is where the genetic makeup of something changes.
Is it true only chemical changes involve a change in appearance?
yes
Is baking soda mixed iodine solution a chemical change?
Chemical, When something changes in color, it is a sign of a chemical change.
Different between physical and chemical change?
In a physical change the object changes appearance but in a chemical change the object turns into something different with different properties.
Is changing color of apple a chemical or physical change?
An apple turning brown is a CHEMICAL change.
Is whipping cream for a cake a chemical or physical change?
physical; it changes only in appearance, not chemical structure :)
Why is Wood burns to form black charcoal a chemical change?
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.
Is boiling potatoes a chemical or physical change?
Physical, because it doesn't change chemical make up it just changes the appearance and texture
Does a solution have a chemical change?
A solution does not have a chemical change, but it does have a physical change in state.
Is an apple turning brown physical change?
It is both physical and chemical change as it changes its appearance , and it results in a new substance also
