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Chapter 4 Properties of Matter

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4.8 Conservation <strong>of</strong> energy<br />

• electrolysis <strong>of</strong> water<br />

electrical energy is absorbed<br />

products have higher potential energy<br />

• hydrogen is burned in O 2<br />

energy is released<br />

product has lower potential energy<br />

Law <strong>of</strong> conservation <strong>of</strong> energy –<br />

energy can be neither created nor destroyed,<br />

though it can be transformed from one to another<br />

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