1.   There was still foam from the beer on his moustache.

2.   Do not use skim milk for cappuccino, because the foam it makes is too stiff.

3.   The expanding urethane foam is good to fill the gaps, because you can get the nozzle of the foam gun deep into the narrow opening.

4.   The foam is sticky, so wear gloves.

5.   The foam is the mark of its voracious appetite.

6.   This cream-colored foam is different from the normal silver froth of churning water.

7.   Unlike toothpaste, the marshmallow foam is compressible, and controlling the flow rate of a compressible foam is a problem more worthy of rocket science than food science.

8.   Keep adding flowers until the foam is no longer visible.

9.   Sticky foam is a tacky, nonhardening thermoplastic foam slightly more dense than water.

10.   The inquiry into the Mei Foo tragedy concluded that polyurethane foam was partly to blame for the high death toll.