Good question. So, perform an experiment: put an ice cube without air bubbles in a glass containing a mixture of ice and cold water. The temperature should become 0°C (just before it freezes), measure it.

Your hypothesis: ice is heavier than water, so it will sink

Execute the test several times, preferably 10 times or more. More is better.

Please share your experiment results Interesting data to know for each test would include:

• sequence number of the test
• temperature of the mixture before and after you put the ice cube in
• method of ice cube creation
• volume of the ice cube
• volume of water/ice mixture
• depth of the water/ice mixture (should be > size of the ice cube)
• type of water used (tap, bottled, …)
• did the ice cube sink
• if no, what volume of the cube remained above the surface level

please also share your conclusion.