Química do MEXT - Graduação

Summary

In this video, Rodrigo Barcellos provides an in-depth guide to the chemistry test for undergraduate courses, including natural sciences, engineering, medicine, and biological fields. He explains the test structure, timing, and the critical need for speed, with an average of 1–1.5 minutes per question. Rodrigo emphasizes that passing requires strong knowledge across organic, inorganic, and physical chemistry, including reactions, isomers, stoichiometry, and solution calculations. He offers practical advice on building speed through repeated practice, studying all topics evenly, and applying formulas effectively. The video equips students with strategies to tackle challenging questions and maximize their performance on the chemistry test.

Takeaways

• 😀 The chemistry test is crucial for various undergraduate courses, including natural sciences, engineering, medicine, and biological areas.
• 😀 Time management is essential: you have about 1 minute and 10 seconds to answer each question, and the total test duration is 1 hour.
• 😀 The average grade to pass the chemistry test is typically between 6 and 7, depending on the difficulty of the test.
• 😀 In-depth knowledge of chemistry is required. A basic understanding is not sufficient to pass; you need to be well-prepared across all areas of chemistry.
• 😀 The chemistry test is comparable to military exams in terms of complexity and speed, though the difficulty may vary from year to year.
• 😀 Organic chemistry is a key focus, with two questions usually dedicated to it: one about direct organic reactions and another about isomerism or synthesis.
• 😀 The test also covers inorganic and physical chemistry topics, such as the periodic table, stoichiometry, chemical equilibrium, and molarity calculations.
• 😀 While organic chemistry takes up a large portion of the test, it is important to review all chemistry content to avoid missing out on easier questions in other topics.
• 😀 The ability to solve problems quickly is crucial. Speed comes from practice and repetition, and you can gradually improve by solving more questions over time.
• 😀 It’s better to have basic knowledge in every subject rather than in-depth knowledge in just a few topics. This way, you won't miss out on questions you could have answered with basic understanding.

Q & A

What is the typical duration of the chemistry test, and how many questions are usually included?

The chemistry test typically lasts for 1 hour, with 36 to 42 items, depending on the year. The questions are grouped into around 7 main sections, each with several sub-items.

How much time does a student have to answer each question on average?

On average, students have about 1 minute and 30 seconds per question, though this can vary between 1 minute 10 seconds to 1 minute 40 seconds depending on the year.

What is the required level of knowledge for this chemistry test?

The required knowledge level is high. Basic chemistry will not suffice. You need to have in-depth knowledge, particularly in organic, inorganic, and physical chemistry.

How important is organic chemistry in the test, and what topics should students focus on?

Organic chemistry is very important, typically accounting for 2 to 3 questions on the test. Key topics include organic reactions, isomerism, synthesis, and structural formulas.

What other areas of chemistry are covered in the test, aside from organic chemistry?

In addition to organic chemistry, the test covers inorganic chemistry (e.g., the periodic table, solutions) and physical chemistry (e.g., stoichiometry, chemical equilibrium, electrolysis).

What is the average passing grade for the chemistry test?

The average passing grade is typically between 6 and 7 out of 10. The grade can vary depending on the difficulty of the test that year, but this range is common.

How can students improve their speed when answering questions in the chemistry test?

Speed is improved through repeated practice. By doing more practice questions over time, students can progressively reduce the amount of time it takes to answer each one.

What advice does Rodrigo give regarding the study of chemistry topics for the test?

Rodrigo advises studying every topic, even the ones that may seem less important. It’s better to know the basics of all subjects than to specialize in just a few, as unexpected easy questions can make a big difference in rankings.

How often do very rare topics appear on the test, and what is Rodrigo’s stance on them?

Rare topics, like nuclear reactions, don’t often appear on the test. However, if they do appear, they will be difficult for everyone. It’s essential to focus on the more common topics but also be prepared for anything.

How important is consistency in preparation for the chemistry test?

Consistency is key. Regular practice and reviewing all topics will not only ensure thorough knowledge but also help improve speed and confidence in solving questions under time pressure.