Gold does not react with water but when mixed with chlorine it creates trihalides gold(lll). Gold dissolves in aqua regia. Gold also reacts with iodine to form monohalide gold (l).
Monohalide gold (l)
A gold leaf was mixed with iodine and the reaction looked like this.
Trihalide gold (lll)
When gold was mixed with chlorine it looks like this. It turnes black and starts to dissolve the gold.
This is auqa regia, a mixture that dissolves gold.