Which reactions performed in the experiment involved chemical changes?
How did the experiement with boiling water compare with the experiment in which magnesium was added to hydrochloric acid?
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.
Therefore, rust is a physicalchemicalphysical AND chemical change.
How closely did your response match the sample response above?matched almost exactlyvery similarsame ideaoff the mark, but I understandoff the mark
Did you find these answers helpful?