There are many, but here are just a few:
carbon dioxide, CO2
oxygen, O2
hydrogen, H2
nitrogen, N2
chlorine, Cl2
fluorine, F2
helium, He
neon, Ne
argon, Ar
krypton, Kr
xenon, Xe
radon, Rn
methane, CH4
ethane, C2H6
propane, C3H8
Some examples of substances that are solids at room temperature include grease. This becomes like a gelatin at room temperature. Butter is also an example.
Because the intermolecular forces of attraction are stronger in some substances than others at room temperature.
Carbon Dioxide, Ammonia and Methane are three examples of common compounds that are gases at room temperature.
iodine
These substances are elements. Moreover they are elements which are solid at room temperature.
There are many. Some examples would be carbon dioxide (CO2), carbon monoxide (CO), hydrogen (H2), oxygen (O2), all of the noble gases, nitrogen (N2), etc.
well go in a room and see if the substance is a solid, liquid or gas
There are many examples. At room temperature some examples might be nitrogen, hydrogen, helium, oxygen, neon, etc.
Some are, but not all. Examples: 1 Carbon is a nonmetal and is solid at room temp., 2 Bromine, a nonmetal, is a liquid at room temperature, 3 Halogens and Noble Gases are nonmetals and exist as gases at room temp. all the non-metals, with the exception of bromine, are either in gaseous or solid state at room temperature. So, only about 50% of the non-metals are gases at room temperature.
Yes. Both are gases at room temperature.
These substances are elements. Moreover they are elements which are solid at room temperature.
Gases at room temperature