When a candle burns, the solid wax melts and burns. In the...

Name: Problem 54, Chapter 1: Introductory Chemistry Atoms First
Uploaded: 2024-01-22T04:27:52-08:00
Duration: 3 min 7 s
Channel: Jennifer Hudspeth
Description: When a candle burns, the solid wax melts and burns. In the process, the wax is combined with oxygen from the atmosphere and converted into carbon dioxide and water vapor. Explain what is going on in terms of chemical change and physical change.

When a candle burns, the solid wax melts and burns. In the process, the wax is combined with oxygen from the atmosphere and converted into carbon dioxide and water vapor. Explain what is going on in terms of chemical change and physical change.

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Key Concepts

Physical Change

A physical change involves a change in a substance’s form or state without altering its chemical composition. This type of change, such as the melting of a solid into a liquid, is generally reversible and does not result in the formation of new substances.

Chemical Change

A chemical change involves the transformation of substances into one or more different substances with new chemical properties. This occurs when new chemical bonds are formed or existing bonds are broken, as seen in combustion reactions where a substance reacts with oxygen to form entirely different compounds, releasing energy in the process.

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