Colourless is a property, or word to describe matter, however the "gas" would be something you're describing. However, if a reaction is omitting a colourless gas, it could be considered a physical property of the reaction.
Is dentsity a chemical propertie or physical propertie
Luster is a physical property of crystals.
Yes.
its liquid and it expands when frozen.
chemical property
physical
Burning is a process, not a property. Specifically it is the process of rapid oxidation.
Density and Luster.
Colorless is a physical property. Determining change requires you to compare two things.
argon is a colorless, odorless, tasteless, gas
physical property
Colorless gas is a physical property rather than a chemical property. Chemical properties describe how a substance interacts with other substances to form new substances. Physical properties, such as color, do not involve changes in the chemical composition of the substance.