No, it is a (physical) state of matter, and 'liquid' is not a property
Being liquid is a physical property. Being water (H2O) is a chemical property.
The fact of being a gas at room temperature is a physical property of that material, not a chemical property.
All things do not boil at the same temperature, so it depends on the chemical aspect of the physical properties of whatever is being boiled.
Because the butter goes from being a solid to a liquid as it changes temperature.
Chemical property
Mercury metal is a liquid at room temperature. By visually determining the physical state of a substance does not produce a new substance. So if the mercury is a liquid that means it underwent a physical change because nothing was added.
All things do not boil at the same temperature, so it depends on the chemical aspect of the physical properties of whatever is being boiled.
Expansive property of liquid (mercury) is being used to measure the comparative temperature of the body. The above is the easiest one.
Chemical property
Copper is a chemical element, so it is considered a substance with distinct chemical properties, not a physical property. Its physical properties include being a solid at room temperature, having a distinct color and density, while its chemical properties include its ability to react with other substances and form different compounds.
Not being affected by acids is a chemical property. This property relates to how a substance reacts with other substances to form new products. In this case, a substance's resistance to being affected by acids is a result of its chemical composition and structure.
If something is liquid, that's its physical state. Solid, liquid, and gas are the states of matter as they began in the modern era. This differentiates matter from the time when things were earth, air, fire or water, or a combination of them. Note also that we've added plasma and a couple of other physical properties to solids, liquids and gases.