蓝莓视频

Have your students to get out their periodic tables and fill in the blank spaces with elemental symbols and complete some of the important safety rules for the high school science laboratory. The first one is done for you.

1. 聽Do not use flammable liquids near open 聽聽聽Fl聽 聽聽聽聽聽聽Am聽 聽聽聽聽聽聽Es聽聽 .
2. 聽Read each lab over thoroughly _____聽 聽_____聽聽 _____聽 聽_____ 聽coming into the lab.
3. 聽 Always tie your long hair _____聽 聽_____聽聽 _____.
4. 聽聽Do not wear open-toed _____聽聽 _____聽聽 _____聽聽 _____ in the lab.
5. 聽聽Never _____聽聽 _____聽聽 _____聽 any of the chemicals.
6. 聽聽Safety goggles must always be _____聽聽 _____聽聽 _____ during the 聽
   听濒补产.
7. 聽聽Always keep a clean work _____聽聽 _____聽聽 _____.
8. 聽聽Always pour _____聽聽 _____聽聽 _____ into water.
9. 聽聽Know where the _____聽聽 _____聽聽 _____ extinguisher and eye 聽_____聽聽 _____聽聽 _____聽 station are聽located.
10. 聽 Never leave a lit Bunsen _____聽聽 _____聽聽 _____聽聽 _____
    聽 unattended.聽
11. 聽 Always place broken glass into a broken glass_____聽聽 _____ 聽 聽_____聽聽 _____聽聽 _____聽聽 _____.
12. 聽 Unless you are explicitly told otherwise, only pour _____聽聽 _____聽聽 _____聽 down the lab sinks.聽
13. 聽 Excess reagents are _____聽聽 _____聽聽 _____聽 to be returned to stock bottles.聽
14. 聽 If chemicals come in contact with skin or eyes, _____聽聽 _____聽聽 _____聽聽 _____ immediately
    聽聽with water.聽
15. 聽 Prevent accidents by using your common _____聽聽 _____聽聽 _____.聽

Printable PDF for Elements of safety puzzle