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Baking a cake is physical change or chemical change?
Baking a cake is a chemical change because the ingredients undergo a chemical reaction when exposed to heat, resulting in a transformation of their molecular structure to form the cake. This is different from a physical change, which does not alter the composition of the ingredients.
Is iron rust a Chemical or physical change?
Chemical change, because it cannot be reversed/ cannot be undone Iron rusting is a chemical change (Oxidization) the elements iron and oxygen form a molecular bond to form a compound known as Iron oxide (Rust). this reaction can be undone as is done with iron ore.
What happens to matter when it undergoes a physical and chemical change?
A chemical change cant be undone and a new substance, so in other words you cant reverse the effects and in the end you get ashes. An example of a chemical change would be burning paper and getting ashes. A physical change can be undone. An example of a physical change would be bending the paper because you can still get the paper back and no new substance is created.
What do we call a Chemical change that cannot be undone?
To Answer your question, it can be reversed, but it not so easy. Look at what I found in an article: "Physical changes, like the melting of a solid to a liquid can be reversed easily - just refreeze it. Chemical changes, like the blackening of toast when burnt, are not so easy to reverse." Hope I Helped -- Nick ____________________________________________ Please check out my youtube account, I am going to have some Chemistry experiments and explanations up in a few months! : http:/www.youtube.com/truetechgeek ____________________________________________
Chemical changes can be reserved by physical change?
No, chemical changes cannot be reversed by physical changes. Chemical changes involve the formation of new substances with different properties, while physical changes only affect the state or appearance of a substance without changing its chemical composition. Once a chemical change occurs, it cannot be undone by a physical change.
Is dissolving salt in water a a chemical change or a physical change?
It is a physical change as it can be "undone" by evaporating the water. An simple example of a chemical change is baking a cake, you can't un-bake a cake. To work out whether it is a chemical or physical change just think whether it can be undone or not.
Is frying a chicken physical or chemical change?
Physical changes can be undone. It is not possible to unfry a chicken. The heat casues chemical changes in the meat and in any coating.
Exameple of a physical change and a chemical change?
A physical change is a change that can be undone. A chemical change cannot be undone. An example of this would be dissolving salt in water. This is a physical change because if you let the water in the container evaporate the salt will be left behind. A chemical change would be like burning a piece of wood since you cannot undo the change taking place to the wood.
What is the difference between a chemical change and physical change?
A physical change changes the physical properties of an element like color where chemical changes change the chemical properties of an element and usually can't be undone.
Is iron rust a physical or a chemical change?
Chemical change, because it cannot be reversed/ cannot be undone Iron rusting is a chemical change (Oxidization) the elements iron and oxygen form a molecular bond to form a compound known as Iron oxide (Rust). this reaction can be undone as is done with iron ore.
Dissolving sugar in lemon water is physical or chemical?
Physical change- it can be undone by evaporating the water.
Is frezzing water a chemical change or physical change?
Freezing water is a physical change. It can be undone. In all situations, ask yourself if the substance can be undone. If the substance can be undone then it is undergoing a physical change. Freezing the water is only changing its phase, therefore it is only experiencing a physical change.
Can a physical change be undone why or why not?
Yes, a physical change can be undone because it does not involve a change in the chemical composition of the substance. Reversing physical changes typically involves applying an opposite force or condition to restore the original state of the matter, such as melting and freezing or evaporating and condensing.
How do you undo the undone?
you can not because the undone is already undone...............
Is frying an egg a physical or chemical change?
Frying an egg is a chemical change. A chemical change is when the chemical properties change and when color changes, it is irreversible and obviously, you cannot change a fried egg back to a raw egg. The egg changes color and the substance is not the same.
Baking a cake is physical change or chemical change?
Baking a cake is a chemical change because the ingredients undergo a chemical reaction when exposed to heat, resulting in a transformation of their molecular structure to form the cake. This is different from a physical change, which does not alter the composition of the ingredients.
When a cube of ice melts to form a puddle of water is it a physical change?
Yes. No chemical change has taken place, only a physical change. It can be undone (liquid water can be re-frozen)
