Grade 2 science · A.15 · Matter
Cooking changes food
Cooking an egg causes proteins inside to bond and form a solid structure. This change is permanent — once cooked, the egg cannot go back to being soft.
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Eli wonders: What happens to a raw egg when it’s boiled?
- It turns into water
- It becomes solid (right)
- It grows bigger
Amara bakes an omelet. What happens to it after cooking?
- It becomes soft again
- It turns into steam
- It hardens (right)
After Omar cooks an egg, which of these is true?
- It turns into juice
- It becomes smaller
- It cannot return to its original state (right)
Tip: Cooking an egg causes proteins inside to bond and form a solid structure. This change is permanent — once cooked, the egg cannot go back to being soft.
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