It looks like you're asking about distinguishing between physical and chemical changes. Here's a quick overview related to your notes:
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Physical Change: A change that alters the form or appearance of a substance but does not change its chemical composition. Examples include melting, freezing, and phase changes (like water changing from ice to liquid).
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Chemical Change: A change that results in the formation of new chemical substances. Indicators include change in color, temperature, gas production, or the formation of a precipitate. Burning wood is a chemical change because it transforms the wood into ash, smoke, and gases through combustion.
Based on what you provided:
- "Only a phase change occurs": This refers to a physical change, such as ice melting to water.
- "Burning wood": This indicates a chemical change.
If you have more specific questions or context, feel free to share those!
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