Ivy Waters International Standards · G4.S-03
Version 2.2.0 · 2026 · © 2026 Ivy Waters International. Licensed under CC BY 4.0.
Ages are the anchor. Grade names are Ivy Waters stage labels for this framework, not a claim about any national school system.
Science & Innovation
Your child can distinguish between temporary physical changes (like freezing water) and permanent chemical alterations (like burning wood or baking an egg).
In real life
Poking a campfire, your child asks whether the ash could ever become wood again. They work out that it cannot and say, "So it's irreversible."
Standards are permanent: an ID issued in this edition keeps pointing at the same standard. Cite it like this.
Ivy Waters International Standards v2.2.0 (2026). Standard G4.S-03: Chemical Innovations & Reversible vs. Irreversible Transitions. https://ivywaters.com/standards/G4.S-03
Ages are the anchor. Grade names are Ivy Waters stage labels for this framework, not a claim about any national school system.
A machine-readable CC BY 4.0 release is published for reuse and integration. Schools and tools may display, adapt, and map their own records against it with attribution.
Ivy Waters International Standards · Version 2.2.0 · 2026 · © 2026 Ivy Waters International. Licensed under CC BY 4.0.
