https://padlet.com/7114150181/v2hmwud1hksy en-us 2017-10-31 11:27:44 UTC 2017-11-02 06:50:43 UTC hello@padlet.com https://padlet.com/7114150181/v2hmwud1hksy/wish/202187585 See:  
After the blue solution was poured onto the aluminium cupcake tray, effervescence occurred. The solution turned from blue to greenish-brown as it reacted with the aluminium tray, creating a hole in the tray and the solution fell through into the cup below.
Reddish-Brown PPT is left on the rim of the tray
Think:
A chemical reaction has occurred between the blue solution and the aluminium tray. The solution corrodes the tray.
Wonder:
- What caused the colour change?
- What qualities of the blue solution facilitates the reaction?
- If it is a chemical reaction, what is the resultant compound?]]> 2017-10-31 15:20:27 UTC https://padlet.com/7114150181/v2hmwud1hksy/wish/202187585 https://padlet.com/7114150181/v2hmwud1hksy/wish/202201075 1. The blue solution consists of a metal less reactive than Aluminium.
>> A displacement reaction occurs as the Al atoms lose electrons and form a compound with the anion.
2. Solutions of Copper (II) and Chromium (II) are blue.

The blue solution is possibly Copper (II) Nitrate.
The bubbling of the solution is due to the nature of single displacement reactions being exothermic (releases heat).
Reddish-Brown PPT is copper metal that has been displaced in the reaction.]]> 2017-10-31 15:44:23 UTC https://padlet.com/7114150181/v2hmwud1hksy/wish/202201075