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Why sharpening a pencil is a different type of physical change than freezing water to make ice cubs?
Although they both still have the same basic elements (i.e. pencil and lead vs water), there is a physical state change that occurs when you freeze water to make ice. Sharpening/shaving down a pencil only results in a difference of shape and size.
It's about the same as ripping paper vs burning paper.
Also, freezing water to make ice is a reversible change (you can melt ice to turn it back into water) and shaving a pencil is an irreversible change (you can't sharpen a pencil and then put the pencil shavings back onto the pencil.)
What else can I help you with?
A pencil becomes shorter after sharpening is it a physical or chemical?
Sharpening a pencil is a physical change because it does not alter the chemical composition of the pencil. The act of sharpening simply removes material from the pencil, making it shorter in length.
How do you cause a physical change?
A physical change does not create a different chemical compound. Grinding a brick into a fine powder is a physical change. Freezing water is a physical change. Melting wax is a physical change.
Is a substance freezing a chemical reaction?
Freezing is a physical change, not a chemical reaction. When a substance freezes, its molecules slow down and arrange into a solid structure. Chemical reactions involve the rearrangement of atoms to form new substances with different chemical properties.
Is freezing point a physical property a physical change a chemical property or a chemical change?
I believe it is physical because you are not changing the chemical compound.
Is freeing a chemical or physical change?
I'm guessing your question is "Is freezing* a chemical or physical change?" and if it is, it is a physical change any phase change is a physical change
Why freezing of water is a physical change?
Freezing water is a physical change because the end product is different. Freezing water is considered ice instead of water.
Is a pencil sharpened a physical or chemical change?
Sharpening a pencil is a physical change, because there is no change to the chemical makeup of the pencil when sharpening it. It is simply chunks of wood being sliced off to reveal more of the lead.It is a physical change.
Is sharpening a pencil a physical?
Yes it is a physical change because the pencil's chemical composition does not change.
Is the freezing of H2O a chemical or physical change?
Freezing of H2O is a Physical Change.
A pencil becomes shorter after sharpening is it a physical or chemical?
Sharpening a pencil is a physical change because it does not alter the chemical composition of the pencil. The act of sharpening simply removes material from the pencil, making it shorter in length.
Freezing involves a chemical reaction?
No, freezing involves phase change, which is a physical change. There is no chemical reaction, as the basic chemistry is unchanged it is still the same material in a different physical state.
How do you cause a physical change?
A physical change does not create a different chemical compound. Grinding a brick into a fine powder is a physical change. Freezing water is a physical change. Melting wax is a physical change.
Is a substance freezing a chemical reaction?
Freezing is a physical change, not a chemical reaction. When a substance freezes, its molecules slow down and arrange into a solid structure. Chemical reactions involve the rearrangement of atoms to form new substances with different chemical properties.
Is freezing nitrogen a chemical change?
No. Freezing a substance is a physical change.
Is sharpening a pencil a chemical or physical?
Sharpening a pencil is a physical change because it involves a change in the physical appearance of the pencil tip without altering its chemical composition. The process of grinding the pencil against a sharpener simply reshapes the pencil tip.
Why is sharpening a pencil a physical change?
Because the pencil is made of wood and you only changed the size and shape of the wood or pencil and did not change what the wood is made of the substance
Why is freezing a physical property?
Freezing is a physical change because the substance that freezes does not change its chemical composition.
