Is the Reaction Between CuCl2 and Al a Chemical or Physical Change?

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In summary, the conversation discusses a question given by a grade 9 teacher to define whether the reactions of CuCl2 and Al or CuCl2 and water are chemical or physical changes. The person is unsure and asks for assistance, but ultimately finds the solution on their own. The conversation also includes a mention of showing one's approach before receiving help.
  • #1
valentix
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I just started grade 9 and one of the questions that my teacher gave us was to define whether CuCl2 and Al is a chemical or physical change.

Since we haven't done any labs with that chemcal...
I found it a bit confusing.



1. CuCl2 + Aluminum = Chemical / Physical change

2. Cucl2 + Water = Chemical / Physical change

Thanks:smile:


-------------

Found the solution
Thanks anyways ^^
 
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  • #2
You have to show you approach with each of these questions first before any of us can assist you, it's just the policy here at physicsforums.
 
  • #3
valentix said:
I am totally hanging on between physical and chemical change, I do think it's more of physical...
Probably because CuCl2 is a solid?
What is the "change" that is taking place?
 

1. What is the chemical equation for the reaction between CuCl2 and Al?

The chemical equation for this reaction is:
2Al + 3CuCl2 → 3Cu + 2AlCl3

2. What type of reaction is CuCl2 + Al?

This is a single displacement or redox reaction.

3. What products are formed from the reaction between CuCl2 and Al?

The products of this reaction are copper (Cu) and aluminum chloride (AlCl3).

4. What are the physical properties of CuCl2 and Al before and after the reaction?

Before the reaction, CuCl2 is a blue-green crystalline solid while Al is a silver-white metal. After the reaction, Cu is a reddish-brown solid while AlCl3 is a white crystalline solid.

5. What is the purpose of this reaction and where is it commonly used?

This reaction is commonly used for copper plating or in the production of copper alloys. It is also used in chemical demonstrations or experiments to show the reactivity of metals.

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