Reaction between iron and sulfur: When we conduct the reaction between Fe and S, it seems to create SO2, which is toxic, and sometimes I smell H2S.

Reaction between iron and sulfur: When we conduct the reaction between Fe and S, it seems to create SO2, which is toxic, and sometimes I smell H2S.
Chemical storage and labelling: We are sorting through our toxic chemicals ADG class 6 and are not sure how we should now label and store them according to the GHS.
Flame testing: What would be considered safer for Year 8 students attempting flame testing of chemicals?
Safe storage of chemicals: I would just like to ask what chemicals can be stored safely together.
In a chemical storeroom, as in which classes can be put together. Thank you.
We are doing the rusting of steel wool with vinegar experiment with our Year 8 students.
Storage and disposal of deliquescent chemicals - Zinc Nitrate: Hi, My bottle of zinc nitrate has liquid in it and the bottle has expanded. It does not look right.
Calcium oxide disposal: Hi. Can anyone tell me how to dispose of some very old calcium oxide. The container is all swollen and the date on the bottle is Dec 1988.
Litmus Paper: The Litmus paper in our lab is many years old, but has been kept dry in a dark drawer.
Disposal of old equipment: We have cupboards full of old school science laboratory equipment including: balances, models, etc. Most of the equipment hasn't been touched in over 10 years.
Bunsen Burners: What are the gas tubing and other connection specifications, including ma