A) Temperature B) Air pressure C) Gravity D) Surface tension
A) Soap film B) Sugar solution C) Air D) Water vapor
A) They pop immediately B) They create a solid C) They disappear D) They form a larger bubble
A) Hydrogen B) Air C) Helium D) Carbon dioxide
A) It expands and can pop B) It shrinks and becomes denser C) It turns solid D) It stays the same size
A) Concrete mixing B) Cooking C) Foam insulation D) Metal casting
A) It's zero B) It's higher than the outside pressure C) It's lower than the outside pressure D) It's equal to the outside pressure
A) By disrupting hydrogen bonds B) By increasing viscosity C) By adding weight D) By altering density
A) It instantly turns solid B) It expands further C) It shrinks without breaking D) The film breaks and the air escapes |