For example, methane (CH4), ethane (C2H6), and propane (C3H8) are all organic compounds that are gases at room temperature. Methanol (CH3OH), ethanol (C2H5OH), and propanol (C3H7OH) are all organic compounds that are liquids at room temperature.
In general, organic compounds with lower molecular weights are more likely to be gases or liquids at room temperature, while organic compounds with higher molecular weights are more likely to be solids. There are also exceptions to this rule; for example, some organic compounds with relatively low molecular weights, such as carbon dioxide (CO2), are gases at room temperature.
