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What should I test first in the physical chemistry experiment of Shanghai High School Entrance Examination?

Take physics first.

The 2021 Shanghai Junior High School Physics and Chemistry Experimental Examination will be held on May 15th and May 16th. Each candidate will take two consecutive physics laboratory operations exams and two chemistry laboratory operations exams. Each exam lasts 15 minutes, and the entire exam process takes about 2 hours.

Chemistry: Coarse salt evaporation and crystallization purification, potassium hypochlorite to produce oxygen;

Physics: testing object density, sliding rheostat to measure current and voltage, small light bulb circuit connection, spring dynamometer measurement Object gravity.