To determine whether the evidence listed supports a physical or chemical change, we can use the characteristics of each type of change:
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Physical Change: A change that alters the form or appearance of a substance but does not change its composition. Examples include changes in state (solid, liquid, gas), dissolving, and changes in size or shape. Physical changes are usually reversible.
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Chemical Change: A change that results in the formation of one or more new substances with different properties. Evidence of a chemical change can include color changes, gas production (bubbles), temperature changes (exothermic or endothermic reactions), formation of a precipitate, or changes in odor. Chemical changes are typically not reversible by simple physical means.
If you have specific examples listed in your chart, please provide them, and I’ll help you determine if they support a physical or chemical change!