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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the atomic number represent?
💡 Hint: It's the letter 'Z'.
Question 2
Easy
How do you find the mass number of an atom?
💡 Hint: Think of the formula: A = Z + N.
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
What is the atomic number of an atom?
- Number of protons
- Number of neutrons
- Number of electrons
💡 Hint: It's key to identifying the element.
Question 2
True or False: The mass number is the sum of protons and electrons.
- True
- False
💡 Hint: Think about what contributes to mass.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
An unknown element has an atomic number of 12 and a mass number of 24. Calculate the number of neutrons and determine the element.
💡 Hint: Use the formula for calculating the number of neutrons.
Question 2
If an element has 20 protons and 22 neutrons, and forms an ion with a +2 charge, what is the new number of electrons?
💡 Hint: Remember how ion charges affect electron count.
Challenge and get performance evaluation