Identify the following as either a chemical change or physical change, and provide evidence to support...

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Chemistry

Identify the following as either a chemical change or physicalchange, and provide evidence to support your answer:
1. Blue Cu(II) cations of the salt solution react with greenNi(II) cations of its salt solution to produce a turqouise coloredsolution
2. A blue Copper 2 cation is heater, and the salt color becamewhite and drops of a clear liquid were seen on the side of the testtube. When water was added, the solution turned blue. However, oncewater was evaporated through heating, the blue salt appearedagain.
3. A blueish-green cation is heater and gas appears and the saltof this cation turned nearly black.
Part B.
1. Describe a way you could determine if Pb 2+ had leaked intopublic water pipes, in which lead was used in the past to connectthe pipes.
2. Indicatre what would occur in the events that Pb 2+ hadindeed leaked into the water
3. Formulate the net ionic equation for a positive test
4. What would occur if there was no Pb 2+ in the water? Wouldthis allow us to conclude that there is definitely no Pb 2+ in thewater, or would there still be uncertainty? Explain

Answer & Explanation Solved by verified expert

4.2 Ratings (586 Votes)

1 Physical change you are mixing two solution of two differentcolors and the result is the mixing of the colors the ions arestill in the same chemical form you can separate both solutions byphysical means2 Chemical change you are adding a removing water See Answer

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