Assertion: hydrogen | /r/HasProperty | gas
Facets:
value: usually
type: DEGREE
value: on earth
type: LOCATION
value: at normal temperature
type: OTHER
value: at pressure
type: MANNER
Source sentences:
text: Hydrogen is a gas at normal temperature and pressure, but hydrogen condenses to a liquid at minus 423 degrees Fahrenheit (minus 253 degrees Celsius).
text: In its pure form on Earth, hydrogen is usually a gas.
text: While hydrogen is typically a gas on Earth, it can be artificially compressed and cooled to become a liquid or a solid.
text: Hydrogen (at normal temperatures and pressures) is a gas, and all the other group 1 elements are solid metals.