Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take mock test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the definition of periodicity?
💡 Hint: Think about the pattern of properties in the periodic table.
Question 2
Easy
Name one of the three classifications of elements.
💡 Hint: These categories help us understand properties better.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
Which of the following groups does NOT contain a metalloid?
- Boron
- Silicon
- Germanium
- Noble Gases
- Arsenic
- Antimony
💡 Hint: Consider what defines a metalloid.
Question 2
True or False: Mendeleev predicted the existence of undiscovered elements.
- True
- False
💡 Hint: Recall how he organized elements.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Cite three discrepancies observed in placing elements in Mendeleev's table and explain their implications.
💡 Hint: Recall specific elements that posed classification challenges for Mendeleev.
Question 2
If given a sample of an unknown element with three outer electrons, predict its position in the modern periodic table and discuss its properties.
💡 Hint: Consider the number of valence electrons and associated characteristics.
Challenge and get performance evaluation