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How do you know if somethings chemical change or physical change?
Wiki User
∙ 10y ago
In a chemical change, a new substance is produced. For example, if something is burnt, it is no longer what it originally was and is, therefore, a chemical change. A physical change is a change in appearance: shape, quantity, and form of matter (solid, liquid, gas).
Wiki User
∙ 10y ago
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What is lightning a candle a physical or chemical change?
chemical
How do you know that baking bread is a chemical change and not a physical change?
Its a chemical change because its changing what it is (from dough to bread)
Why is it diffifult to make a list of simple rules that will let you classify a chemical and phyiscal change?
It is not that difficult if you know the difference between a chemical and physical change. A physical change is reversible and a chemical change is not. In a physical change a new substance is not formed. The breaking of glass is not reversible and is physical.
When molten rock cools and hardens is a physical change or chemical change?
I think it is physical but I do know it is an igneous rock
Is crushing a can a physical or chemical change?
A can being crushed is definitely a physical change. Same properties, just a different shape!
Is grilling a burger a chemical or physical change?
Well, grilling the bread is a chemical change, but the melting cheese I believe is a physical change.
What is lightning a candle a physical or chemical change?
chemical
Is transferring graphite from pencil to paper when writing a chemical or physical change?
physical change. You know that it is a physical change because it can be reversed. An example of a chemical change would be cooking an egg. Because you cannot reverse the process.
Is slicing a banana a physical change or chemical change?
It's a physical change, because no chemicals are changing if I cut a banana.
Is hydrofluoric acid attacking glass a physical or chemical change?
Does anyone know
How do you know that baking bread is a chemical change and not a physical change?
Its a chemical change because its changing what it is (from dough to bread)
Is cutting your hair a chemical change or a physical change?
cutting your hair is probably a physical change I don't know
Why is it diffifult to make a list of simple rules that will let you classify a chemical and phyiscal change?
It is not that difficult if you know the difference between a chemical and physical change. A physical change is reversible and a chemical change is not. In a physical change a new substance is not formed. The breaking of glass is not reversible and is physical.
Is drying cloths is chemical change?
It is a Physical Change because i dont know but im sure that is a physical change :P
Is a log burning a chemical or physical change?
Chemical change, because it is irreversible. The chemical composition of the substance actually changes. A physical change is a change of state, like water to ice. There, H20 is still H20.
Is making ice cream a physical change?
no its a chemical change (i just did i project on making ice cream in meh class and one question was "is this a chemical or physical change? how do u know?"
When molten rock cools and hardens is a physical change or chemical change?
I think it is physical but I do know it is an igneous rock
