Chemical compounds


organic chemicals

Organic chemicals: I have been asked to purchase examples of esters, amides, amines, alkanes and alkenes.

Can someone recommend which of these chemicals are best for school use please?

I have looked on the ASSIST Page of Recommended Chemicals, but I'm still confused as to which would be the best ones to purchase for use by Year 12 students.

Tollens Test

Tollens Test: For Year 12 chemistry, the teachers wanted to demonstrate the silver mirror, also called Tollens test.  The process goes like this:

1) 10 ml of a mixture of glucose with a bit of tartaric acid is poured into a flask.

2) 10 ml of ammonium nitrate and 10 ml silver nitrate are mixed together. This mix is then added to the flask. 

3) 10 ml of strong sodium hydroxide is then added to the flask.

Laboratory Chemicals and Waste Management/Setup

Laboratory Chemicals and Waste Management/Setup: I am seeking reading material/documents that will help me in regards to the 'Chemical Waste Setup' required. What I need to know is also what type of chemicals go into what type of container, eg: acids into a corrosives container, ethanol into a flammable waste container. In particular, could you please advise how to treat the waste of Cobalt Chloride, Copper Chloride, Strontium Chloride, Lithium Carbonate - can you please advise what chemicals they can be mixed and disposed of with.

Drying of anhydrous sodium carbonate

Drying of anhydrous sodium carbonate:  I am about to standardise a sodium hydroxide solution but I have been wondering about the recommended temperature and time for  drying anhydrous sodium carbonate as the first step in the process.

I have always done it for many hours at a high temperature, but recently I’ve been told on good authority that it just needs to be at 60 degrees C for an hour and that the higher temperature would cause decomposition.

Some sources say 270 degrees for 30 minutes and others have recommended 100 degrees C.

Iron(III) Nitrate storage

Iron(III) Nitrate storage. Hi, Just wanting to find out if the storage requirements have changed for iron (III) nitrate? The recent (May 2015) ChemSupply SDS  has iron (III) nitrate listed as Transport Hazard Class 8, and not as previously listed as Dangerous Goods Class 5.1. Does this mean the storage has changed from being with the oxidizing agents? Thank you.

The Elements: Elements and compounds assessment

This online resource is an assessment item to identify compounds and elements.

The resource tests a student’s ability to identify compounds and elements and their properties through the use of an activity that deconstructs common materials found in the real world.

At the end of the assessment, a report is created that can be printed and handed to a teacher.

Subscribe to RSS - Chemical compounds