IB Chemistry Redox and Stoichiometry Test Results

SAT Chemistry scores came out today.

We had another perfect score.

JJStudent & parent messagesEnglish translationStudent

I got 800 in both! Haha. I will take physics next time.

Teacher

Wow, haha! Congratulations!

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Year 2 students at an international school recently took an IB Chemistry test on redox.

Perhaps because they are nearing the end of Year 2, although the test was described as a redox test,

many questions required understanding of the course from beginning to end.

Several students found it very difficult.

One Year 2 student improved greatly after starting lessons with me and was discussing the possibility of a predicted 7.

That student has treated me to sushi, red ginseng, meals, and other things. I think this exam did not go well for them.

I have not felt able to message for a while. Still, we need to get back to studying alongside the school syllabus. I feel sorry.

I had not taught those Year 2 students the opening stoichiometry topics. There had not been a Chemistry tutor here, so I think they had received little outside help.

Many questions came from that material, which seems to have caught a lot of students out.

I expected titration and prepared many stoichiometry questions on the Winkler method and similar examples.

But the actual questions turned out to be more complicated.

JJStudent & parent messagesEnglish translationTeacher

For the first question: compare H₂SO₄(aq) with H₂O. SO₄ does not react, so OH becomes O₂, giving H₂ and O₂.

Teacher

For the second question, 0.5 × 30 × 60 / 96500 is the number of moles.

Teacher

64/2 represents the 2:1 electron ratio and 64 g/mol.

Teacher

For question 33, if the answer is H, that seems strange... [message cut off]

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The student was asking question after question right up to the exam…

JJStudent & parent messagesEnglish translationStudent

I am sorry. :(

Teacher

Huh? What is that reaction?

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and sent this message afterward. I am sorry.

It must have been extremely difficult.

By contrast, the Year 1 students all sounded positive.

JJStudent & parent messagesEnglish translationStudent

Ah, I think I did well. The questions were easy too.

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Lately, I have been feeling a little worn down by the fact that students can study the same material yet receive very different scores.

Almost everything on the Year 1 test came from questions I had explained, so most students said it was easy. Even so,

some did not do well. In those cases, contacting their mothers is difficult because I feel sorry.

One student I am particularly fond of is very playful.

Before the exam, I told them to stay and finish questions, but they escaped and sent me a message like this instead.

Then a message came after the test.

JJStudent & parent messagesEnglish translationStudent

I got a 6...

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Ah… receiving it made me feel so sorry toward their mother.

Lately, inquiries have been coming from many places, and lessons fill every day.

I have realized that although I want a little rest, I cannot get it.

I think I am tired. Even when someone asks about lessons, I no longer actively urge them to join. Haha.

Still, I will do what I can and take a trip somewhere when an opportunity comes.