system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does ice melt slower in a glass of water than it does in a glass of soft drink (soda)?
gpt
Salt.

Salt causes ice and snow to melt, and many places use it on roads. Despite its obvious sweetness, soda contains salt.

Ice melts faster in liquids with salt.

So, ice would melt faster in a glass of water from the ocean, as opposed to a glass of water from a lake, as opposed to filtered tap water, even if the temperature of each glass of water was exactly the same.