Difference between visible change&observable change
回答 (1)
2008-09-14 9:12 pm
✔ 最佳答案
A visible change is the change that you see (e.g colour change) only.
An observable change is the change that you see, smell (e.g pungent/choking smell), feel (e.g. heat released/absorbed), hear (e.g. pop sound), or taste (e.g. sour taste of acids, but tasting chemicals is against laboratory regulations).
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