•Transform your physics lesson on atomic spectra with this fully interactive Energy Level & Spectrum Lab! Students explore electron transitions in hydrogen-like atoms, visualize photon emission and absorption, and calculate wavelength, frequency, and energy—all inside a browser-based HTML app (no installation required!).

This comprehensive resource brings Bohr’s model, quantized energy levels, and spectral lines to life. Perfect for IB DP Physics, AP Physics, and advanced high school courses.

What’s Included

1. Interactive HTML Simulator
• Direct link + QR code to the interactive vector app. (works offline!Works on any device, For iPad devices, first download the free Documents app from the App Store then download and open this App.)

• Electron animates between levels
• Calculates ΔE, E-photon​, f, and λ
• Shows emission (bright) and absorption (dark) spectral lines
• Adjustable atomic number Z (1–3) for hydrogen, He⁺, Li²⁺

2. Student Worksheet (PDF / editable)
• Background notes, guided investigation, data tables
• Balmer series exploration
• Comparison of emission vs absorption
• Effect of nuclear charge Z
• Integrated app instructions

3. Self-Marked Quiz (built into the app!)
• 4 conceptual questions
• Instant feedback for students
• Encourages self-assessment and reflection

4. Complete Answer Key
• All numeric values, conceptual explanations, and quiz solutions included

Standards Alignment

IB DP Physics (Topic 12: Atomic, nuclear and particle physics)
NGSS HS-PS4-3 & HS-PS4-4
AP Physics 2: Quantum, Modern Physics

Teacher Use Ideas

• Use live in class to demonstrate electron transitions
• Assign worksheet & self-check quiz for homework or revision
• Add the app link to Google Classroom / LMS
• Excellent preparation for IB exams and Paper 2 problems

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