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 Law?
💡 Hint: Think about the connection between atomic mass and properties.
Question 2
Easy
Who developed the first version of the Periodic Table?
💡 Hint: This chemist is well-known for organizing elements by their properties.
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
Who is known for developing the Periodic Law?
- Dmitri Mendeleev
- Robert Boyle
- Antoine Lavoisier
💡 Hint: Remember who first arranged elements based on their properties.
Question 2
True or False: Mendeleev arranged all elements purely by their atomic mass without any consideration of their properties.
- True
- False
💡 Hint: Consider the role of chemical properties in Mendeleev's organization.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Consider Mendeleev's method of leaving gaps for undiscovered elements. How does this approach reflect the scientific method in answering unknowns?
💡 Hint: Reflect on how scientists use existing data to form predictions.
Question 2
Evaluate how the shift from atomic mass to atomic number affected the accuracy of the Periodic Table.
💡 Hint: Consider the flaws Mendeleev faced when organizing elements by atomic mass.
Challenge and get performance evaluation