How did the experiement with the iron filings and sulfur compare with the experiment in which copper(II) sulfate pentahydrate was heated?
How did the experiement with boiling water compare with the experiment in which magnesium was added to hydrochloric acid?
Which real-world scenarios below represent physical changes? Check all that apply.
Another real-world example of a change is rust. Rust is iron(III) oxide (Fe2O3), which results when iron is exposed to oxygen and water. What are some indicators of rusting? Check all that apply.
Therefore, rust is a physicalchemicalphysical AND chemical change.
Based on the results of this lab, write a short paragraph that summarizes how to distinguish physical changes from chemical changes.
Physical changes alter a substance’s form or appearance while its properties are retained, and the original materials may be recoverable. Chemical changes form a new substance. Evidence of a chemical change can include gas, a solid forming, light, or heat.
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