Carrots can be purple?!
Lemons float and limes sink.
Limes are more dense than lemons, so they sink to the bottom when put in water, while lemons float around at the top.
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And a can of Coke will sink, while a can of Diet Coke will float.
The sugar in the regular Coke makes it more dense than Diet Coke, so it falls to the bottom.
Oranges aren't always orange; sometimes they're green.
Javier Morales / Creative Commons / Via Flickr: javmorcas
via BuzzFeed/Food