Halo students and avid readers,
This is one of the latest question sent in on Chemistry Practical. It’s a good question which I think some students would love to find out the answers as well, isn’t it? 😉
“I wanted to ask what’s the correct/appropriate way to wash test tubes when you’re having a Chemistry practical? Because i’ve faced shortage of time, and it’s because i wasted a lot of time to wash my test tubes. Some students maybe more “kiasu” and they washed the test tubes multiple times to ensure it’s clean.
For example, i’ve 6 test tubes, but i’m required to do 7 or 8 experiments, so i’ve got to wash the test tubes. However, the test tube i’m re-using again, may have traces of the previous solution left and thus, affecting the result of the current one. Please do advise me on the correct and advisable method to wash my test tubes!
Is it okay to wash my test tube just with plain tap water or distilled water? Or both? And i do believe most schools provide a brush, which can fit into the test tube to remove solid particles or ppt which hardens and stays in the test tubes, am i required to use it, or it can be ignored?
This is approximately how i wash my test tube [Read more…] about O Level Chemistry: School Practical / SPA Tips