Which reactions performed in the experiment involved chemical changes?
Check all changes that you listed.
Refer back to your data. List all indicators of chemical change that you observed.
gas, temperature changes.
How did the experiement with the iron filings and sulfur compare with the experiment in which copper(II) sulfate pentahydrate was heated?
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.
Based on the results of this lab, write a short paragraph that summarizes how to distinguish physical changes from chemical changes.
Physical changes do not form a new substance, and the original materials may be recovered or retain their properties. Chemical changes form a new substance; the production of gas or a solid, or the release of light or heat, can be evidence of a chemical change.
How did the experiement with boiling water compare with the experiment in which magnesium was added to hydrochloric acid?
Therefore, rust is a change.
How closely did your response match the sample response above?
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