5.4.1 - Writing Chemical Formulae
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Practice Questions
Test your understanding with targeted questions
What is the chemical symbol for Oxygen?
💡 Hint: Look for the letter that comes first in the name.
What is the atomicity of Nitrogen gas (N₂)?
💡 Hint: Count the number of nitrogen atoms in the molecule.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the chemical symbol 'Na' stand for?
💡 Hint: Remember the first letter and image of the element.
True or False: The valency of Oxygen is 1.
💡 Hint: Recall Oxygen's ability to form bonds based on its outer electrons.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
If Ammonium has a valency of 1 and Phosphate has a valency of 3, derive the formula for Ammonium Phosphate.
💡 Hint: Use criss-cross to see how they balance.
Balance the equation: C₄H₁₀ + O₂ → CO₂ + H₂O.
💡 Hint: Count each atom carefully on both sides.
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