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Copy of Physical vs Chemical Change
Transcript of Copy of Physical vs Chemical Change
Any process that changes one substance into a brand new substance.
A type of change in which the form of matter is altered BUT one substance is not transformed into another.
Examples of a
Examples of Chemical
Combustion, like the burning of a
candle, is an example of a
When iron rusts
it oxidizes.That's a Chemical Change.
You can't put sour milk back
to how it was. It's irreversible...and gross.
You can't recover the wood by a reverse process...unless you're a wizard...in which case, you need to be at Hogwart's.
Mixing Vinegar and Baking Soda
Because it rearranges the molecules. How can you fix that?
A new substance is formed. You're body can't run on nachos, so it turns nachos into something it can run on.
Cooking an Egg
You can't reverse cooking an egg...unless you're a wizard...in which case, you should use your powers for good instead of evil.
Baking a Cake
It can't be change back into the mixture...unless you're a wizard...in which case, you're wasting your powers on messing with delicious foods.
Using a Battery
The electric current is produced by a chemical change within the battery.
The starch in the kernel are converted to a form that is easier to eat and digest.
It is losing water and new chemicals are entering. Use your magical powers to make my fruit last longer, Harry!
A new product is made, and it looks delicious!
It's being oxidized into a new substance.
Roasting a Marshmallow
It starts off white, and then it eventually melts, and that means you can't change it back...unless...
It's irreversible. Trust me. I'm a wizard.
Paper Becomes Ash
All changes of state are physical
Melting an Ice Cube
No new substance is formed.
The glass pieces can be rearranged.
Breaking a Glass
Dissolving Sugar in Water
The substances may change form
but not what they are.
You're not actually changing the makeup
of the substance, just the way it looks.
You're just changing the way it looks.
Sublimating Dry Ice
Its just a change of state.
Same properties, just a
Sharpening a Pencil.
You only changed the size and
shape of the pencil.
Its still iron...duh.
Bread Dough Rising
It can change back, because
as it rises, it can pop.
Melting is just a transition between states of matter. Which ones?!
Its only a change of state.
Why is this a physical change?