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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Who discovered the electron?
💡 Hint: Think of the experiment with cathode rays.
Question 2
Easy
What charge do protons have?
💡 Hint: Remember, they are found in the nucleus.
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 discovered the neutron?
- J.J. Thomson
- Ernest Rutherford
- James Chadwick
💡 Hint: Remember, he revealed the missing mass in the nucleus.
Question 2
Protons reside in which part of the atom?
- True
- False
💡 Hint: Consider what makes up the atomic nucleus.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Discuss how the discovery of the electron challenged the existing theory of matter in the 19th century and what implications this had for modern physics.
💡 Hint: Consider how the inclusion of subatomic particles changes the understanding of elements.
Question 2
If an atom contains 6 protons, 6 neutrons, and 6 electrons, identify the element and discuss its isotopes.
💡 Hint: Remember that isotopes have the same number of protons but different neutrons.
Challenge and get performance evaluation