7 - Summary
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
What particles make up an atom?
💡 Hint: Think about the smallest unit that retains chemical properties.
What does the atomic number represent?
💡 Hint: It's a unique identifier for each element.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the charge of a proton?
💡 Hint: Think about what attracts electrons!
True or False: Electrons are found in the nucleus.
💡 Hint: Remember their position around the nucleus.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Given an element has 15 protons and 16 neutrons, identify its atomic number and mass number. What element is it?
💡 Hint: Remember how to find both the atomic and mass number!
Explain why carbon-12 and carbon-14 are isotopes of carbon, and how different neutron counts affect their stability.
💡 Hint: Think about how the number of protons defines the element!
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.