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 practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the Periodic Table?
💡 Hint: Think about how elements are arranged.
Question 2
Easy
What are valence electrons?
💡 Hint: Consider which ones react in chemical reactions.
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
The Periodic Table arranges elements by what?
- Atomic weight
- Atomic number
- Chemical reactivity
💡 Hint: Recall the concept of how each element is uniquely defined.
Question 2
Mendeleev predicted unknown elements by leaving gaps. True or False?
- True
- False
💡 Hint: Think about how he approached elements not yet discovered.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Using the Periodic Table, explain why lithium is more reactive than sodium.
💡 Hint: Consider atomic size and electron shielding.
Question 2
Devise a strategy for predicting the chemical behavior of a new element discovered in Group 16.
💡 Hint: Think about the goal of stability in electron configuration.
Challenge and get performance evaluation