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Coarseness is a characteristic, not a change.
octane is not a chemical or physical property. Properties are what define something not what they are. So octane has both chemical and physical properties.
If you burn something it is a chemical change, however if you melt of boil it, it is a physical change.
Chemical change
lighting is a chemical change
Chemical
physical
Coarseness is a characteristic, not a change.
Physical--- melting something doesn't change its chemical composition.
physical.<3
octane is not a chemical or physical property. Properties are what define something not what they are. So octane has both chemical and physical properties.
It is a physical change from a rough to a smooth surface.
If you burn something it is a chemical change, however if you melt of boil it, it is a physical change.
Chemical change
lighting is a chemical change
chemical property
Chemical