Well, although the two terms both requires the individual to make a judgment, but I think there is still a very slight, but important difference between these two terms. I will use two 2012 HSC chemistry questions to illustrate my point a bit better:
An 'ASSESS' question:
Question 33: Chemists can assist in reversing or minimising the environmental problems caused by technology and the human demand for products and services. With reference to this statement
ASSESS the need for chemists to collaborate when monitoring the environmental impact of a named electrochemical cell. (6 marks)
Marking criteria for the top band response:
-Demonstrates a thorough knowledge and understanding of the identified roles of chemists and the environmental impact of a correctly named electrochemical cell
- Assesses the need for collaboration between chemists
- Demonstrates coherence and logical progression of ideas with correct scientific terminology used
An "EVALUATE" question:
Option topic: Shipwrecks and Corrosion
Question 35 e): Critically EVALUATE the continued use of steel in ship building with reference to the history of ocean-going vessels, the composition of steel and ways in which its interaction with the environment can be controlled. (7 marks)
Marking criteria for the top band response:
-Demonstrates a thorough knowledge and understanding of the history of ocean-going vessels, the composition of types of steel and methods of preventing corrosion
- Provides a judgment about the use of steel for ship building in light of these concepts
-Writes logically, providing a coherent progression of ideas
This may not be super evident in the bolded points of the marking criteria I have highlighted, but if you have a look at the sample answers for the relevant questions in this link:
http://www.boardofstudies.nsw.edu.a...s/pdf_doc/chemistry-hsc-sample-answers-12.pdf and reread each question, you will see essentially:
-in an assess question-YOU NEED to make up the criteria/the points against which you will formulate your judgment on, for example, 'what type of chemists are you going to focus on? What cell are you going to focus on? Are you going to focus on the impact of the production of the cell? the disposal of the cell? the usage of the cell? or all three? after you formulate such a criteria, and then you make a judgment based on your OWN CRITERIA
-in an evaluate question, the CRITERIA is already provided in the question-i.e. the history of vessels, the composition of steel, interaction with a salty, marine environment-you just need to address these criteria and come up with an overall judgment.
Hope this helps