Question

Select all steps below that help you handle chemicals safely.

using droppers to transfer small amounts of chemicals

using tongs to move hot objects

checking the test tubes for chips prior to using them

washing your hands after you finish the lab

Answer 1

All four. Brief reasons:
- Using droppers for small amounts reduces spills and improves control/accuracy.
- Using tongs for hot objects prevents burns and accidental spills of hot chemicals.
- Checking test tubes for chips avoids breakage and leaks that could cause exposure.
- Washing your hands after the lab removes any chemical residues and prevents ingestion or contamination.