Heat Change Sandbox

Compare invented reaction cards and explain which classroom model releases more heat in a symbolic energy diagram.

Chemistry - Chemistry/Biology Pack 2

Symbolic reaction model Heat Change Sandbox symbolic reaction visualizationEducational toy model only

20.0 °CRoom temperature

Observation pass0.45 s

Reaction card9.8 cards

Energy step1 steps

Safety boundary0.05Heat change preview5 levels

Activity objective

Compare invented reaction cards and explain which classroom model releases more heat in a symbolic energy diagram.

Teacher guidance

Ask what stayed the same before discussing the reaction.
Use particle sketches before symbolic notation.
Use shape and labels with color-coded substances.

Evidence checklist 0/5

Prediction made before changing the reaction card.
Before and after energy levels compared.
Heat arrow and uncertainty note recorded.
Reaction card stayed symbolic and invented.
Safety boundary explains why this is not a real chemistry procedure.

Cross-platform readiness3/3

Web demo playusable

exothermic-sandbox renders as a lab toy model with adjustable controls, a checklist, and public safety copy.

Keep rendered route, console, network, and safe-copy checks attached before release embedding.

Native mobile screencontract ready

The surface uses touch-sized controls, a single-column mobile layout, no hover-only actions, and no raw child media capture.

Port the same controls into the native shell and verify phone, tablet, offline resume, reduced motion, and bottom-rail navigation.

ChromeOS input paritycontract ready

The web surface keeps range controls, stepper buttons, evidence capture, and review links available to keyboard, pointer, and touch users.

Capture Chromebook-class keyboard, pointer, touch, reduced-motion, and timing proof before widening classroom rollout.

Public copy and safety

Use symbolic lab language only. Do not instruct learners to mix real substances.
This is a symbolic classroom model using invented reaction cards. No real chemical mixing, heating, flame, pressure-vessel, ingestion, explosion, burn-risk, recipe, disposal, or lab-procedure claims.
No raw device data, child media, or biometric input.

Build packet status

Teacher review focuses on energy evidence, uncertainty, and the safety boundary before classroom sharing.

Asset assemblyControl wiringEvidence captureRelease gate

Cross-platform readiness3/3

Web demo playusable

exothermic-sandbox renders as a lab toy model with adjustable controls, a checklist, and public safety copy.

Keep rendered route, console, network, and safe-copy checks attached before release embedding.

Native mobile screencontract ready

The surface uses touch-sized controls, a single-column mobile layout, no hover-only actions, and no raw child media capture.

Port the same controls into the native shell and verify phone, tablet, offline resume, reduced motion, and bottom-rail navigation.

ChromeOS input paritycontract ready

The web surface keeps range controls, stepper buttons, evidence capture, and review links available to keyboard, pointer, and touch users.

Capture Chromebook-class keyboard, pointer, touch, reduced-motion, and timing proof before widening classroom rollout.

Public copy and safety

Use symbolic lab language only. Do not instruct learners to mix real substances.

This is a symbolic classroom model using invented reaction cards. No real chemical mixing, heating, flame, pressure-vessel, ingestion, explosion, burn-risk, recipe, disposal, or lab-procedure claims.

No raw device data, child media, or biometric input.