So how does that explain I can take 10 100ml bottles and an empty 1l bottle through security but not 1 full 1l bottle?

The same reason used for WA emissions inspections (since suspended). If your tailpipe emitted 99ppm of pollutants, you were good to go. If it emitted 100ppm, you had to get it fixed.

Good ole step functions.

You have to be able to fit those 10 100mL bottles into a single 1 quart resealable bag. At most you'd probably get about 9.46 of those 10 bottles in the bag but in practice it's fewer still.

1 US liquid quart is about 946.353 milliliters.

You can't, at least not where I live