At STP, the physical property of aluminum that always remains the same from sample to sample is density. The standard temperature is actually 273 degree kelvin and the standard pressure is 1 atmospheric pressure. I hope that this is the answer that has actually come to your desired help.
At STP, the physical property of aluminum that remains constant is its density, approximately 2.70 g/cm³. Density is an intensive property, meaning it does not change with sample size. Therefore, all pure samples of aluminum will have the same density.
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