List four observations that may be used as evidence of


Oxidation and reduction are usually involved in single replacement reactions. what is gained during reduction and lost during oxidation?

List four observations that may be used as evidence of chemical change?

Your teacher hands you a test tube containing a clear solution with either dissolved Na2CO3 or dissolved NaCl. considering the double- replacement reactions you performed, what one reagent would you add to determine your test tube contents? describe what you would expect to observe for either Na2CO3 or NaCl upon addition of your reagent?

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Chemistry: List four observations that may be used as evidence of
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