Physical changes are those that can be observed.
Volume is a physical property.
Chemical changes are considered unseen because they occur at the atomic level, changing the actual structure of the thing. This is in comparison to a physical change, which is visible.
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.
The way I remember the difference, is: a physical property is a property that you can observe without changing it (or observe without a chemical reaction). So properties like melting point, boiling point, density, color, hardness are all physical properties. A property like 'reacts with water' could only be observed by performing the reaction to observe the change.
physical (because you can observe it without inducing a chemical reaction).
they are harder to observe because youcan't be seen.
When you can observe something's characteristics, they are called physical traits. These are the things you can see, hear, smell.
physical
Volume is a physical property.
Chemical changes are considered unseen because they occur at the atomic level, changing the actual structure of the thing. This is in comparison to a physical change, which is visible.
Physical--- melting something doesn't change its chemical composition.
physical.<3
itjj
Yes , it should or else it is a physical property
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.