Label each research topic below as an example of pure chemistry or applied chemistry. 1) developing a fire resistant fabric 2) reducing the active ingredient in a medication to minimize side effects 3) analyzing the compounds found in a soil sample from mars 4) measuring how much water expands upon freezing

These can be classified as

1) developing a fire resistant fabric  : it will involve the application of chemistry as this is not direct chemistry so this will be applied chemistry

2) reducing the active ingredient in a medication to minimize side effects :

This will involve the pure chemistry

3) analyzing the compounds found in a soil sample from mars  

This will involve again the analysis part hence it is pure chemistry

4) measuring how much water expands upon freezing

This is application of chemistry , hence applied chemistry

Pure chemistry:

Applied chemistry:

particle   p is an electron and particle q is a neutron