I know that water will contract as it cools until it gets to about 4 degrees celsius and then as it cools it begins to expand again. After it freezes, how long does it continue to expand as it gets colder? Does it get to a maximum size and then stop expanding? Does that happen at a specific temperature? Does it ever contract again as it gets colder?
A Google image search for “density of water” will show you plots with the relevant numbers. It’s most dense around 4 °C IIRC.
OP is asking about ice, not water.
Here’s a chart I found with some sample values of the density of ice at given temperatures. As you can see, ice is less dense at higher temperatures:
-100 0.9257
- 90 0.9249
- 80 0.9241
- 70 0.9233
- 60 0.9224
- 50 0.9216
- 40 0.9208
- 30 0.9200
- 20 0.9194
- 10 0.9189
0 0.9162