Melting ice is a physical change because it involves a change in the state or phase of a substance (from solid to liquid) without altering its chemical composition. Ice is made up of water molecules held together by intermolecular forces, and when heat is applied, it provides enough energy for those forces to break and allow the molecules to move freely, resulting in the formation of liquid water.
Creating the compound water (H2O) from its elements, hydrogen (H) and oxygen (O), is a chemical change because it involves a rearrangement of atoms, leading to the formation of new chemical bonds. The reaction between hydrogen and oxygen, commonly known as combustion or burning, results in the production of water molecules with entirely different properties and characteristics compared to the individual elements.
Melting ice is a physical change while creating the compound, water (H2O), is chemical. Why?
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