squeaky pop test - This test is used to identify hydrogen gas, limewater - This chemical is used to test for carbon dioxide, oxygen - This gas will relight a glowing spill, oxide - When a metal or non-metal reacts with oxygen it makes this kind of chemical, hydrogen - When metals react with an acid they make this gas, carbon dioxide - When carbonates react with acids they make this gas, fizzing - We see this when a gas is produced in a reaction, a new substance - This is always made in a chemical reaction,

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