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What is cutting up an old rag a physical change or chemical change?
Wiki User
∙ 10y ago
It is not a chemical change because after cutting the chemical composition remain unchanged.
Wiki User
∙ 10y ago
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Is a cracker that is getting old a physical or a chemical change?
It is definitely a chemical change
Is bleaching hair a physical change or chemical change?
when you bleach your hair it is a chemical change,because you are adding the chemical from the bleach to your hair and "you can't change it back to the old". chemical change: you can't change it back to the old and it makes a new subtance. physical change:it does not make a new subtance and it is still the same object.
Is a bleached hair a physical or a chemical change?
when you bleach your hair it is a chemical change,because you are adding the chemical from the bleach to your hair and "you can't change it back to the old". chemical change: you can't change it back to the old and it makes a new subtance. physical change:it does not make a new subtance and it is still the same object.
Is Boiling oil a physical change or a chemical change?
Physical ... it's only a state change. Cool it and it reverts to its old condition.
Old ham goes bad in the refrigerator chemical or physical?
Chemical change. The ham can't become good again.
Who discovered physical and chemical change?
Nobody; exothermic reactions exist independent of our will.
Is old ham in the refrigerator a chemical change or physical change?
When ham get "old" (ie rots or degrades), it undergoes both a chemical and a physical change. Microbes break down the meat into energy they can use and in turn leave their metabolic wastes (ie a biochemical change). When a person notices a ham after it has been sitting on a shelf for several week, that person will notice that the color, shape, smell, and taste (if they are brave) of the ham has changed. Thus the changes are both chemical and physical
Is an old garden rake that is rusting a physical change?
No. It is chemical change because that rust will never be a metal again. A chemical change is a change that is irreversible. ( Ex. Your rake ( that rust will never be a metal again.) A physical change is a change that still has the same compound. Ex. sand ( rocks, just littler.)
Is a rusty nail physical change or chemical change?
it is a Chemical change because before they are rusty they are perfect and they are a solid brown but over time they change colors because they are getting old H2O + air + metal = rust
Why burning of candle is a physical and chemical change?
CHEMICAL
How is moldy cheese a chemical change?
Because moldy chesse is a new prodcut made from an old one.
Is bleaching tiles a chemical change?
Bleaching your hair is a chemical change. The bleach reacts in hair, removing the color in an irreversible chemical reaction. There is no way to reverse the bleaching. Bleaching your hair also makes a new substance, when you do bleach your hair it is permanent.
