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Yeast rising bread works because yeast (an organism) converts starch to carbon dioxide which makes bread grow. This can be seen as a chemical reaction (yeast converting starch to CO2 gas) or a physical reaction (the CO2 making the bread expand).
Wiki User
∙ 13y ago
Wiki User
∙ 12y agotoasing bread is a physical change because nothing changes its still bread even tho is toast its still bread. So it would be a physical change.
Wiki User
∙ 13y agois breaking of a tree limb a chemical or physical change?
Wiki User
∙ 15y agoChemical, anytime something is cooked, it is a chemical change.
Wiki User
∙ 12y agoIt's a chemical change because of the "burning".
You cannot reverse the effect.
Wiki User
∙ 9y agoBaking Bread is not purely physical, but chemical as well. The appearance changes, but the chemical composition does also.
Wiki User
∙ 13y agoIt is a chemical change. The yeast converts carbohydrates into carbon dioxide and alcohol.
Wiki User
∙ 11y agoyes because the yeast is still the bread
Wiki User
∙ 9y agoPhysical
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Is toasted bread a physical change?
No. It's a chemical change because the process is irreversible, there is a change in colour and a change in odour.
Is baking bread physical or chemical change?
Classify it as chemical, the heat is used mainly to speed up the reaction.
Difference between a physical change and a chemical change?
A chemical change is the change of one or more substances into other substances. A physical change is when the state or shape of matter is changed. In a chemical change molecules are combined or beak apart to form new substances.Rusting iron is an example of a chemical change. crushing a can or tearing paper can be an example of physical change.
How is baking bread a chemical change?
Yes, yes it is!
What is a chemical change?
A chemical change is a change in which a substance turns into a completely different substance that can't be reversed. A chemical change often happens when a substance burns (not to be confused with evaporation or melting of a substance), changes colors, a substance spoils or rusts, photosynthesis or respiration, and/or a substance tarnishes.Some examples are a bike rusting, burning bread to make toast, fireworks exploding, milk spoiling, a leaf changing color, mixing eggs and flour for a batter, baking a cake, etc.A chemical change will NOT dissolve, go through a state of matter (sublimation, decomposition, melting, freezing, evaporation, and condensation), breaking or tearing of a substance, and/or anything that can be reversed back.A chemical change is one in which one or more new substances are formed. Simple examples include burning and rusting.
Is slincing bread physical or chemical change?
Slicing bread is a physical change because it does not change the chemical composition of the bread.
Is baking bread physical change?
bread is a chemical change, not a physical change
Is slicing a bread a chemical or a physical?
Slicing bread is a physical change, because each slice of bread has the same chemical composition as it had before it was sliced.
Is bread a physical or chemical change?
chemical
How is toasting bread chemical or physical change?
It is a chemical change because you can not return it to bread
Is bread breaking a physical or chemical change?
Physical
Is toasting a bread a chemical or physical change?
chemical change
Is a bread toasted a physical or chemical change?
It is a chemical change.
When bread is baked is that a physical change or a chemical change?
chemical
Is toasting bread chemical or a physical change?
chemical change
Is a toasting bread a chemical or a physical change?
It is chemical change
Is toasting bread a chemical change or a physical change?
It is chemical change
