VIDEO INSTRUCTIONS & AI PROMPTS
CBSE CLASS 10 SCIENCE | CHAPTER 1 | SHORT 01
Vertical 9:16 • 1080 × 1920 • 48 seconds • Hinglish • Faceless
Revision: 25 October 2026
Master generation prompt
Create one premium, mobile-first CBSE Class 10 educational YouTube Short, topic: What is a Chemical Reaction? Use exactly six scenes and the matched timings below. No AI-generated chemical equation text: add formulae as vector overlays during editing. Faceless scenes, realistic virtual chemistry demonstrations, clean 2D animations, occasional accurate 3D atom models, deep navy #0B1630, cyan #00D4E5, yellow #FFCB48, white. Preserve central safe area for subtitles, keep lower 20% and rightmost 15% free of essential labels. Fast, clear transitions without flashing hazards. Only a trained/virtual demonstration of burning magnesium. Output six independent clips, each without baked-in captions, for assembly in 1080 × 1920 at 30 fps.
Timing & production constraints
Runtime: 48 seconds including final follow invitation. Voice narration supplied in Document 2; do not create improvised audio.
Overlay rule: Overlay exact equations and all text in editing software. Verify formula 2Mg + O₂ → 2MgO and 2 Mg/2 O atoms on each side.
Audio: Warm experienced Indian teacher; music low, upbeat, instrumental (approximately −28 to −24 LUFS under dialogue), whooshes only at key changes; no explosive sound on the magnesium demonstration.
Scene 01 | 00:00–00:03 | HOOK
Visual direction: Macro close-up of reddish-brown rust forming on iron gate; fast whip-pan to curdled milk in a transparent glass. Make both visuals believable and clearly distinct.
Copy-paste AI clip prompt: Photorealistic vertical 9:16 science video, iron gate rusting in humid outdoor Indian setting, rust time lapse, fast match cut to milk turning sour in glass, cinematic lighting, no text, no people, realistic material behavior.
Exact on-screen text: WHY DOES IRON RUST? | WHY DOES MILK TURN SOUR?
Narration cue: Kabhi socha hai, iron gate par rust kyun lagta hai?
Scene 02 | 00:03–00:09 | DAILY LIFE
Visual direction: Side-by-side visuals: rusted metal on left, sour milk on right; a clean question-mark animation connects them.
Copy-paste AI clip prompt: Vertical clean navy science infographic split screen: realistic rusty metal surface and spoiled milk as two everyday chemical changes; subtle glow and cyan connector line; no inaccurate microscopic representations; no text baked into clip.
Exact on-screen text: SAME SCIENCE BEHIND BOTH!
Narration cue: Ya doodh khatta kyun ho jaata hai? Iske peeche hai ek interesting science concept — Chemical Reaction!
Scene 03 | 00:09–00:19 | DEFINITION
Visual direction: Show blue and yellow labelled abstract reactant blocks entering a transformation field; emerge as green product block with visibly different identity. Keep it conceptual, not literal atoms.
Copy-paste AI clip prompt: Premium educational 2D motion graphic on navy background, two labelled generic substances transform into a new differently coloured substance, concept of reactants forming new products; no text baked into video.
Exact on-screen text: CHEMICAL REACTION = NEW SUBSTANCE FORMED
Narration cue: Jab ek ya zyada substances react karke naye substances banate hain, jin ki properties alag hoti hain, toh use chemical reaction kehte hain.
Scene 04 | 00:19–00:31 | MAGNESIUM EXPERIMENT
Visual direction: Virtual teacher-supervised chemistry laboratory. Magnesium ribbon burns with intense white light; cut to white magnesium oxide solid. Avoid visual implication of safe home testing.
Copy-paste AI clip prompt: Vertical photorealistic virtual chemistry classroom demonstration: narrow magnesium ribbon held by laboratory tongs in a controlled lab behind eye protection, bright white combustion light, white magnesium oxide powder remaining, no exposed student and no instructions for performing it at home.
Exact on-screen text: MAGNESIUM + OXYGEN → MAGNESIUM OXIDE
Narration cue: Example dekho! Magnesium oxygen ke saath react karke magnesium oxide banata hai.
Scene 05 | 00:31–00:39 | EQUATION
Visual direction: Switch to precise computer-typeset equation. Under it, show schematic atom counting: four Mg atoms? No: 2 Mg atoms and 2 O atoms before and after; 2 MgO formula units. Never render chemistry text with image generator.
Copy-paste AI clip prompt: Clean educational motion backdrop, cyan and yellow spheres suggest two magnesium atoms and one diatomic oxygen molecule forming two MgO formula units, preserve 2 Mg and 2 O atoms; abstract teaching model not reaction pathway; blank area reserved for equation overlay.
Exact on-screen text: 2Mg + O₂ → 2MgO
Narration cue: Equation hai: 2Mg + O₂ gives 2MgO.
Scene 06 | 00:39–00:48 | TAKEAWAY + CTA
Visual direction: Highlight NEW SUBSTANCE FORMED as large text; flash two examples as thumbnails. Close with series end card and subtle follow icon, preserving interface-safe zones.
Copy-paste AI clip prompt: Premium clean vertical motion graphic navy cyan yellow, bright icon of new material emerging from reacting substances, minimalist recap montage of rusty iron, sour milk and white MgO, empty zones for accurate typography, no baked-in text.
Exact on-screen text: NEW SUBSTANCE FORMED? = CHEMICAL REACTION! | NEXT: PHYSICAL vs CHEMICAL CHANGE
Narration cue: Toh yaad rakho: New substance formed? Chemical reaction! Aise hi Science ke concepts easily samajhne ke liye follow karo.
Overlay and animation design
Typography: use a bold sans-serif for hooks and an equation-capable font for chemical formulae. Max two lines per text card; white body text on navy; colour-code reactants cyan and products yellow. Display equation for at least six seconds; ensure true subscript ₂. Use a subtle left-to-right wipe between reactants and product, never imply atoms vanish or appear. Captions: sentence-case Hinglish, white with shadow, 2-line maximum.
Edit / quality-control checklist
• Check all scenes total 48 seconds, audio and visuals match the separate script.
• Check the voiceover is exactly user-provided and less than 100 words if counted by whitespace.
• Never portray souring milk as merely a colour change; use a labelled conceptual cut.
• Show magnesium producing bright white light and white magnesium oxide; virtual supervised only.
• Ensure 2Mg + O₂ → 2MgO is balanced and overlay text is computer-typeset.
• Keep captions above YouTube lower controls and left of engagement icons.
• Export H.264 MP4, 1080 × 1920, 30 fps; test on a phone before uploading.
YouTube publishing copy
Title: What Is a Chemical Reaction? ⚗️ | Class 10 Science in 48 Seconds #Shorts
Description: Why does iron rust and milk turn sour? Learn the meaning of chemical reactions with the magnesium + oxygen example. CBSE Class 10 Science Chapter 1 — Chemical Reactions and Equations. Watch the next Short: Physical vs Chemical Change.
Hashtags: #Class10Science #ChemicalReactions #Shorts
Thumbnail headline: NEW SUBSTANCE = CHEMICAL REACTION?
