Question

Physical verse chemical change quick check answers
Sorry for any misspellings
or reaction occurs
2 and 4
Only a phase change occurs
Burning wood

Answer 1

It looks like you're asking about distinguishing between physical and chemical changes. Here's a quick overview related to your notes:

1. **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).

2. **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.

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