Final answer:
When conducting an experiment to determine the mass of unknown metal samples, one would first measure the initial mass of the sample, then after the experiment, measure the final mass to see if there were any changes. The average mass can be calculated by taking the sum of the initial and final mass divided by 2. The relative mass refers to the comparison of the mass of an unknown metal sample to a known reference mass.
Step-by-step explanation:
The question is asking for the various ways to record the mass of unknown metal samples. The options given are:
- Initial mass
- Final mass
- Average mass
- Relative mass
When conducting an experiment to determine the mass of unknown metal samples, one would first measure the initial mass of the sample, then after the experiment, measure the final mass to see if there were any changes. The average mass can be calculated by taking the sum of the initial and final mass divided by 2. The relative mass refers to the comparison of the mass of an unknown metal sample to a known reference mass.