This fizzing chemical reaction between two house hold substances to make a third seems like magic and really fascinates people. Teachers please listen to the whole podcast to pick up safety tips. This is ideal for home schooling.
https://www.webqc.org/balance.php?reaction=CaCl2%2BNaHCO3%3DH2O%2BCO2%2BNaCl%2BCaCO3
https://www.webqc.org/balance.php?reaction=CaCO3%2BHCl%3DCaCl2%2BCO2%2BH2O
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