Measurement Lab in Chemistry!

My measurement in chemistry lab can be summed up in one sentence: I fail at estimating mass and volume. For example, during the measurement lab, I estimated a container of water as 30.1 grams. After we measured it, it was actually 73.2 grams, making my percentile of error 58.88%. Most of my percentiles of error were greater than 50%. I also estimated the volume of a small glass bottle as 12mL when it was actually 29mL. Fail. D< Luckily, my skills with using a scale are somewhat advanced.

Also, we left a test tube on the table. This is possibly dangerous because someone could knock it off the table, and the test tube would be shattered. Also, I learned not to pour liquid directly into the metal pan, as certain liquids could corrode the metal.