Chemistry Section for Virtual Science Lab#647
Conversation
WalkthroughA comprehensive chemistry section is introduced to the virtual lab, featuring new Django views, URL routes, HTML templates, and interactive JavaScript simulations for experiments such as titration, reaction rate, solubility, precipitation, and pH indicator. The navigation is updated to link to the new chemistry home page and its subpages. Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant Browser
participant DjangoServer
participant JSModule
User->>Browser: Navigates to Chemistry section
Browser->>DjangoServer: GET /virtual_lab/chemistry/
DjangoServer->>Browser: Render chemistry/index.html
User->>Browser: Clicks experiment link (e.g., Titration)
Browser->>DjangoServer: GET /virtual_lab/chemistry/titration/
DjangoServer->>Browser: Render titration.html
Browser->>JSModule: Loads titration.js
User->>JSModule: Interacts with UI (inputs, buttons)
JSModule->>Browser: Updates canvas, hints, and properties
Assessment against linked issues
Assessment against linked issues: Out-of-scope changesNo out-of-scope changes were found. All code changes are directly related to the objectives of introducing a chemistry section and its interactive simulations. ✨ Finishing Touches
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Summary of Changes
Hello @10done, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request significantly expands the Virtual Science Lab by introducing a comprehensive Chemistry section. It delivers five distinct, interactive simulations covering fundamental chemistry concepts, providing users with a hands-on virtual environment to explore chemical reactions and properties.
Highlights
- New Chemistry Section: A dedicated 'Chemistry' section has been added to the Virtual Science Lab, providing a new category for interactive simulations. This section is now accessible via the main navigation.
- Five Interactive Chemistry Simulations: Five new interactive simulations have been introduced: Acid-Base Titration, Reaction Rate, Solubility & Saturation, Precipitation Reaction, and pH Indicator. Each simulation offers a visual and interactive way to explore key chemical concepts.
- Frontend and Backend Integration: The necessary JavaScript logic for each simulation has been implemented, along with their respective Django HTML templates. New URL routes and corresponding Django view functions have been added to integrate these simulations into the application's architecture.
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📒 Files selected for processing (14)
web/virtual_lab/static/virtual_lab/js/chemistry/ph_indicator.js(1 hunks)web/virtual_lab/static/virtual_lab/js/chemistry/precipitation.js(1 hunks)web/virtual_lab/static/virtual_lab/js/chemistry/reaction_rate.js(1 hunks)web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js(1 hunks)web/virtual_lab/static/virtual_lab/js/chemistry/titration.js(1 hunks)web/virtual_lab/templates/virtual_lab/chemistry/index.html(1 hunks)web/virtual_lab/templates/virtual_lab/chemistry/ph_indicator.html(1 hunks)web/virtual_lab/templates/virtual_lab/chemistry/precipitation.html(1 hunks)web/virtual_lab/templates/virtual_lab/chemistry/reaction_rate.html(1 hunks)web/virtual_lab/templates/virtual_lab/chemistry/solubility.html(1 hunks)web/virtual_lab/templates/virtual_lab/chemistry/titration.html(1 hunks)web/virtual_lab/templates/virtual_lab/layout.html(1 hunks)web/virtual_lab/urls.py(2 hunks)web/virtual_lab/views.py(1 hunks)
🧰 Additional context used
🧠 Learnings (1)
📓 Common learnings
Learnt from: Abhishek-Punhani
PR: alphaonelabs/alphaonelabs-education-website#337
File: web/templates/courses/detail.html:1506-1560
Timestamp: 2025-04-07T11:33:41.277Z
Learning: For the alphaonelabs-education-website project, the team prefers to keep PRs focused and manageable in size. Additional enhancements like accessibility improvements should be addressed in separate follow-up issues rather than expanding the scope of an existing PR.
🧬 Code Graph Analysis (6)
web/virtual_lab/static/virtual_lab/js/chemistry/ph_indicator.js (3)
web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js (2)
hintEl(28-28)propEl(40-40)web/virtual_lab/static/virtual_lab/js/chemistry/precipitation.js (3)
resetBtn(14-14)hintEl(15-15)propEl(16-16)web/virtual_lab/static/virtual_lab/js/chemistry/titration.js (3)
propEl(52-52)y(63-63)id(64-73)
web/virtual_lab/static/virtual_lab/js/chemistry/reaction_rate.js (2)
web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js (2)
canvas(3-3)ctx(4-4)web/virtual_lab/static/virtual_lab/js/chemistry/titration.js (1)
hint(41-41)
web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js (3)
web/virtual_lab/static/virtual_lab/js/chemistry/reaction_rate.js (2)
canvas(3-3)ctx(4-4)web/virtual_lab/static/virtual_lab/js/chemistry/precipitation.js (2)
hintEl(15-15)propEl(16-16)web/virtual_lab/static/virtual_lab/js/chemistry/titration.js (1)
propEl(52-52)
web/virtual_lab/urls.py (1)
web/virtual_lab/views.py (6)
chemistry_home(48-49)ph_indicator_view(68-69)precipitation_view(64-65)reaction_rate_view(56-57)solubility_view(60-61)titration_view(52-53)
web/virtual_lab/static/virtual_lab/js/chemistry/precipitation.js (2)
web/virtual_lab/static/virtual_lab/js/chemistry/titration.js (3)
beakerCanvas(3-3)bctx(4-4)propEl(52-52)web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js (2)
hintEl(28-28)propEl(40-40)
web/virtual_lab/static/virtual_lab/js/chemistry/titration.js (4)
web/virtual_lab/static/virtual_lab/js/chemistry/precipitation.js (3)
beakerCanvas(4-4)bctx(5-5)propEl(16-16)web/virtual_lab/static/virtual_lab/js/chemistry/reaction_rate.js (1)
hint(27-27)web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js (1)
propEl(40-40)web/virtual_lab/static/virtual_lab/js/chemistry/ph_indicator.js (2)
y(57-57)id(58-83)
🪛 HTMLHint (1.5.0)
web/virtual_lab/templates/virtual_lab/chemistry/ph_indicator.html
[error] 1-1: Doctype must be declared before any non-comment content.
(doctype-first)
web/virtual_lab/templates/virtual_lab/chemistry/precipitation.html
[error] 1-1: Doctype must be declared before any non-comment content.
(doctype-first)
web/virtual_lab/templates/virtual_lab/chemistry/solubility.html
[error] 1-1: Doctype must be declared before any non-comment content.
(doctype-first)
web/virtual_lab/templates/virtual_lab/chemistry/reaction_rate.html
[error] 1-1: Doctype must be declared before any non-comment content.
(doctype-first)
web/virtual_lab/templates/virtual_lab/chemistry/index.html
[error] 1-1: Doctype must be declared before any non-comment content.
(doctype-first)
web/virtual_lab/templates/virtual_lab/chemistry/titration.html
[error] 1-1: Doctype must be declared before any non-comment content.
(doctype-first)
🪛 Ruff (0.11.9)
web/virtual_lab/views.py
48-48: Missing return type annotation for public function chemistry_home
(ANN201)
48-48: Missing type annotation for function argument request
(ANN001)
52-52: Missing return type annotation for public function titration_view
(ANN201)
52-52: Missing type annotation for function argument request
(ANN001)
56-56: Missing return type annotation for public function reaction_rate_view
(ANN201)
56-56: Missing type annotation for function argument request
(ANN001)
60-60: Missing return type annotation for public function solubility_view
(ANN201)
60-60: Missing type annotation for function argument request
(ANN001)
64-64: Missing return type annotation for public function precipitation_view
(ANN201)
64-64: Missing type annotation for function argument request
(ANN001)
68-68: Missing return type annotation for public function ph_indicator_view
(ANN201)
68-68: Missing type annotation for function argument request
(ANN001)
🪛 Pylint (3.3.7)
web/virtual_lab/views.py
[convention] 48-48: Missing function or method docstring
(C0116)
[convention] 52-52: Missing function or method docstring
(C0116)
[convention] 56-56: Missing function or method docstring
(C0116)
[convention] 60-60: Missing function or method docstring
(C0116)
[convention] 64-64: Missing function or method docstring
(C0116)
[convention] 68-68: Missing function or method docstring
(C0116)
🪛 Biome (1.9.4)
web/virtual_lab/static/virtual_lab/js/chemistry/ph_indicator.js
[error] 2-3: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 5-7: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 7-9: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 9-11: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 12-17: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 56-57: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 119-119: This let declares a variable that is only assigned once.
'ph' is never reassigned.
Safe fix: Use const instead.
(lint/style/useConst)
[error] 119-119: Use Number.parseFloat instead of the equivalent global.
ES2015 moved some globals into the Number namespace for consistency.
Safe fix: Use Number.parseFloat instead.
(lint/style/useNumberNamespace)
web/virtual_lab/static/virtual_lab/js/chemistry/reaction_rate.js
[error] 5-6: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 40-40: Use Number.parseFloat instead of the equivalent global.
ES2015 moved some globals into the Number namespace for consistency.
Safe fix: Use Number.parseFloat instead.
(lint/style/useNumberNamespace)
[error] 72-72: Use Number.parseFloat instead of the equivalent global.
ES2015 moved some globals into the Number namespace for consistency.
Safe fix: Use Number.parseFloat instead.
(lint/style/useNumberNamespace)
[error] 79-79: Use Number.parseFloat instead of the equivalent global.
ES2015 moved some globals into the Number namespace for consistency.
Safe fix: Use Number.parseFloat instead.
(lint/style/useNumberNamespace)
web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js
[error] 52-52: Use Number.parseFloat instead of the equivalent global.
ES2015 moved some globals into the Number namespace for consistency.
Safe fix: Use Number.parseFloat instead.
(lint/style/useNumberNamespace)
web/virtual_lab/static/virtual_lab/js/chemistry/precipitation.js
[error] 17-21: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 34-34: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
web/virtual_lab/static/virtual_lab/js/chemistry/titration.js
[error] 7-8: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 31-31: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 32-32: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 57-60: Template literals are preferred over string concatenation.
Unsafe fix: Use a template literal.
(lint/style/useTemplate)
[error] 63-64: Declare variables separately
Unsafe fix: Break out into multiple declarations
(lint/style/useSingleVarDeclarator)
[error] 78-78: Use Number.parseFloat instead of the equivalent global.
ES2015 moved some globals into the Number namespace for consistency.
Safe fix: Use Number.parseFloat instead.
(lint/style/useNumberNamespace)
[error] 79-79: Use Number.parseFloat instead of the equivalent global.
ES2015 moved some globals into the Number namespace for consistency.
Safe fix: Use Number.parseFloat instead.
(lint/style/useNumberNamespace)
[error] 80-80: Use Number.parseFloat instead of the equivalent global.
ES2015 moved some globals into the Number namespace for consistency.
Safe fix: Use Number.parseFloat instead.
(lint/style/useNumberNamespace)
⏰ Context from checks skipped due to timeout of 90000ms (2)
- GitHub Check: Run Tests
- GitHub Check: build-and-test
🔇 Additional comments (20)
web/virtual_lab/templates/virtual_lab/layout.html (1)
30-31: LGTM! Navigation correctly activated for Chemistry section.The change properly replaces the disabled span with an active link pointing to the chemistry home page, maintaining consistency with the existing navigation structure.
web/virtual_lab/templates/virtual_lab/chemistry/ph_indicator.html (1)
1-56: Well-structured template with appropriate input validation.The template correctly uses Django's template inheritance, internationalization, and includes proper input validation attributes for pH values (0-14 range with 0.1 step increments). The layered canvas approach for visual effects is a good design choice.
Note: The HTMLHint doctype warning is a false positive since Django templates extend base templates that contain the doctype declaration.
web/virtual_lab/templates/virtual_lab/chemistry/index.html (1)
1-50: Excellent responsive design with clear navigation structure.The chemistry home page template provides an intuitive card-based interface for accessing different experiments. The use of color-coded gradients and hover effects enhances user experience, and the Django URL template tags are correctly implemented.
Note: The HTMLHint doctype warning is a false positive for Django templates.
web/virtual_lab/static/virtual_lab/js/chemistry/ph_indicator.js (2)
54-84: Well-implemented drop animation with smooth effects.The drop animation logic is well-structured with proper cleanup and visual feedback. The splash effect adds a nice touch to the user experience.
87-106: Creative confetti animation for neutral pH celebration.The confetti animation provides delightful user feedback when reaching neutral pH. The use of requestAnimationFrame ensures smooth performance.
web/virtual_lab/templates/virtual_lab/chemistry/precipitation.html (1)
1-52: Well-structured template with good Django conventions.The template properly extends the base layout, uses internationalization, and implements a clear separation between controls and visualization. The three-layer canvas approach for animation effects (swirl, precipitate, beaker) is a sophisticated design choice.
web/virtual_lab/templates/virtual_lab/chemistry/titration.html (1)
16-40: Input validation looks appropriate for chemistry experiments.The min/max/step constraints for concentration and volume inputs are well-suited for realistic chemistry simulation parameters.
web/virtual_lab/templates/virtual_lab/chemistry/solubility.html (1)
15-21: Input validation is well-designed for solute amounts.The step and minimum constraints for solute input are appropriate for a chemistry simulation.
web/virtual_lab/templates/virtual_lab/chemistry/reaction_rate.html (1)
16-22: Input validation is appropriate for concentration values.The constraints for initial concentration input are well-suited for chemistry simulations.
web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js (2)
10-24: Canvas drawing logic is well-implemented.The beaker visualization with dynamic liquid fill levels and labeling provides good user feedback for the solubility simulation.
26-48: Simulation state logic is well-designed.The three-state system (unsaturated, saturated, supersaturated) with appropriate user feedback provides a realistic chemistry simulation experience.
web/virtual_lab/urls.py (2)
4-5: LGTM! Well-structured import additions.The new chemistry view imports are properly organized and follow the existing pattern.
Also applies to: 11-14
27-32: LGTM! Clean URL pattern structure.The new chemistry URL patterns follow Django best practices with descriptive paths and consistent naming conventions. The hierarchical structure under
virtual_lab/chemistry/provides clear organization.web/virtual_lab/static/virtual_lab/js/chemistry/reaction_rate.js (1)
56-58: LGTM! Correct first-order reaction kinetics implementation.The mathematical model for first-order decay (dc/dt = -k * c) is correctly implemented with appropriate rate constant and time step.
web/virtual_lab/static/virtual_lab/js/chemistry/precipitation.js (3)
32-42: LGTM! Well-implemented animation loop.The swirl animation uses
requestAnimationFrameappropriately for smooth performance and proper cleanup withcancelAnimationFrame.
65-95: LGTM! Efficient particle system implementation.The particle spawning and animation system is well-designed with proper filtering to remove particles that have fallen below the visible area, preventing memory leaks.
103-115: LGTM! Comprehensive reset functionality.The reset function properly cleans up all animation frames, clears canvases, and resets UI state to prevent resource leaks.
web/virtual_lab/static/virtual_lab/js/chemistry/titration.js (3)
21-27: LGTM! Good pH color mapping implementation.The color mapping for different pH ranges provides intuitive visual feedback with appropriate color transitions from red (acidic) to blue (basic).
61-74: LGTM! Clean drop animation implementation.The drop animation is well-implemented with proper cleanup and reasonable timing parameters.
30-37: pH Calculation Logic Looks CorrectThe
computePHfunction correctly implements the standard strong acid–strong base titration formulas:
- It returns 7 at equivalence (net ≈ 0).
- For acid excess (net < 0), it computes pH = –log₁₀([H⁺]) = –log₁₀(–net/totV).
- For base excess (net > 0), it computes pH = 14 – pOH = 14 + log₁₀([OH⁻]) = 14 + log₁₀(net/totV).
No changes are required here.
2 participants
Fixes #646
https://www.loom.com/share/3dfdb0bcc80849769f29bfabb83fd8fb?sid=9e487e39-7c9b-4b0a-b95c-d8af98c5e3e8
https://www.loom.com/share/060e381644e340f3ad9b9f68049561cb?sid=f62b1299-6abd-43d0-8929-1532f1c18471
https://www.loom.com/share/fe4d5dccc61b41d1adab592064ab507d?sid=7c416476-7061-4017-b687-273d53ac7c10
Checklist
Summary by CodeRabbit
New Features
User Interface
Navigation