The pH Scale
Pubblico: High SchoolCategoria: Chemistry
Descrizione
Introduces the pH scale from 0 to 14 with a color-gradient bar and real-world substance examples. Explains the logarithmic relationship between pH and hydrogen ion concentration, and animates how Hโบ concentration changes across the scale.
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The pH Scale
Description
Introduces the pH scale from 0 to 14 with a color-gradient bar and real-world substance examples. Explains the logarithmic relationship between pH and hydrogen ion concentration, and animates how Hโบ concentration changes across the scale.
Phases
| # | Phase Name | Duration | Description |
|---|---|---|---|
| 1 | Title | ~3s | Title appears |
| 2 | pH bar appears | ~5s | Gradient bar 0โ14 with tick marks fades in |
| 3 | Acidic zone | ~5s | 0โ6 region highlighted red; "Acidic" label; Hโบ = high |
| 4 | Neutral zone | ~4s | pH 7 highlighted green; "Neutral" label; pure water |
| 5 | Basic zone | ~5s | 8โ14 region highlighted blue; "Basic/Alkaline" label; Hโบ = low |
| 6 | Substance placement | ~8s | Lemon juice, coffee, water, baking soda, bleach placed on scale |
| 7 | Hโบ animation | ~5s | Hโบ ion dots appear/disappear as pH marker moves |
| 8 | Formula display | ~4s | MathTex pH = -log[Hโบ] shown with brief explanation |
| 9 | Outro | ~3s | Summary |
Layout
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ The pH Scale โ โ title
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโค
โ โ
โ [Red โ acidic โโโโโโโ neutral โโโโ basic โ Blue] โ โ pH gradient bar
โ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
โ โ
โ ๐ 2 โ 5 ๐ง 7 ๐งช 9 ๐งด 13 โ โ substance labels
โ โ
โ pH = -log[Hโบ] โ โ formula
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Area Descriptions
| Area | Content | Notes |
|---|---|---|
| Top | Title | Fades in |
| Center | Color gradient pH bar with tick marks | Rectangle segments colored acidโneutralโbase |
| Below bar | Substance icons and labels | Placed at correct pH positions |
| Bottom | LaTeX formula | pH = -log[Hโบ] |
Assets & Dependencies
- Fonts: LaTeX / sans-serif
- Colors: Acid end = #e63946 (red), Neutral = #57cc99 (green), Base end = #4361ee (deep blue)
- Manim version: ManimCE 0.19.1
Notes
- Build the gradient bar as ~14 colored rectangles interpolated from red to green to blue
- Substance labels appear with a FadeIn from below
- Hโบ concentration bubble changes size logarithmically