Final answer:
Physical properties, such as color and luster, do not change with the size of the sample and are inherent characteristics of a substance.
Step-by-step explanation:
The properties that do not change for a substance regardless of the size of the sample are its physical properties. These include characteristics like color and luster, which can be observed without altering the chemical composition of the substance.
For example, no matter how much copper you have, it will always exhibit its characteristic reddish-brown color and metallic luster. Similarly, the color of sulfur will be yellow whether you have a tiny sample or a large one. Physical properties are consistent and inherent attributes of a given substance.