There are several reasons why students may face difficulties in understanding the periodic table and chemical elements:1. Complexity of the subject: Chemistry, as a subject, can be quite complex and abstract for some students. The periodic table consists of 118 elements, each with its own unique set of properties and characteristics. This can be overwhelming for students who are new to the subject.2. Lack of foundational knowledge: A strong foundation in basic chemistry concepts is essential for understanding the periodic table. Students who lack this foundational knowledge may struggle to grasp the relationships between elements and their properties.3. Memorization challenges: The periodic table requires students to memorize a significant amount of information, such as element names, symbols, atomic numbers, and atomic masses. This can be a daunting task for some students, particularly those who struggle with memorization.4. Insufficient teaching methods: In some cases, the teaching methods used to introduce the periodic table may not be effective in helping students understand the concepts. This can result in confusion and a lack of interest in the subject.To overcome these barriers, students can employ the following study techniques:1. Break down the information: Instead of trying to learn the entire periodic table at once, students should break it down into smaller sections. This can make the information more manageable and easier to understand.2. Use mnemonic devices: Mnemonic devices can help students remember the names, symbols, and other properties of elements. For example, students can create acronyms, rhymes, or stories to help them remember the information.3. Visual aids: Visual aids, such as flashcards, posters, or interactive online tools, can help students better understand the periodic table and its elements. These aids can also help students retain the information more effectively.4. Practice problems: Students should practice solving chemistry problems that involve the periodic table and chemical elements. This will help them apply their knowledge and reinforce their understanding of the concepts.5. Seek additional resources: If students are struggling with the periodic table, they should seek additional resources, such as textbooks, online tutorials, or tutoring services, to help them better understand the material.6. Active learning: Students should engage in active learning by asking questions, participating in discussions, and collaborating with their peers. This can help them develop a deeper understanding of the periodic table and its elements.By employing these study techniques, students can overcome the barriers they face in understanding the periodic table and chemical elements, ultimately leading to a more successful learning experience.