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Is it correct to say that dissolving i a packet of juice powder in water makes a new substance, fruit punch, and so it must not be a physical change?

Answer 1

No, it's not a completely new compound, despite its altered appearance. It's just a powder that dissolves in water to form waters of hydration around it.

This "new" fruit punch is actually just hydrated juice powder, which is just an anhydrate with water molecules surrounding it rather than a brand-new chemical compound.

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Answer 2

Ellie Andrews

No, the dissolution of a packet of juice powder in water results in a physical change rather than a chemical change. The substances involved undergo a physical state change (from solid powder to liquid solution), but the chemical composition of the components remains unchanged, and the mixture of water and dissolved juice components is what remains.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.