The Ultimate Guide- How to Prepare for CHEM191/ PHSI191 (5 STEPS)

Brynn OngCHEM191, Health Science First Year4 Comments

CHEM191 and PHSI191 are notorious for being the two most difficult papers in Otago Health Science First Year (HSFY) semester 1. Passing rates are surprisingly low and poor results will definitely affect your semester 2 papers. Failing CHEM191 means you cannot take BIOC192 in semester 2. Moreover, given that they are core papers, your overall performance in HSFY will be … Read More

CHEM191 Made Easy! (Tutorial)- Stoichiometry and Limiting Agents/ Reactants

Brynn OngCHEM191, Health Science First YearLeave a Comment

STOICHIOMETRY = RECIPE Think of stoichiometry as a recipe. To make a yummy meal from Jamie Oliver’s newest recipe book, you need to follow all the instructions clearly. You also need the correct ratio of ingredients. For chemical reaction to happen, you need the correct ratio of reactants. For example, 500g flour + 250g water + 100g butter –>¬† 1 … Read More

CHEM191 “HACKS” (Part 1)

Brynn OngCHEM191, Health Science First YearLeave a Comment

CHEM191 is no doubt one of the most difficult subject in health science first year. During my time, there were rumors¬†that about 50% of the students failed CHEM191. I am not sure if I would believe that! However, after private tutoring CHEM191 for 6 years, I can see why the subject is tough. I never scored full marks in any … Read More