Final answer:
The statement about igniting a Bunsen burner with a spark once it is connected to a fuel source, such as methane, is true. Methane is often used because it reacts easily with oxygen to produce a combustion reaction, resulting in carbon dioxide and water.
Step-by-step explanation:
True or false: Once connected to a source of fuel, usually methane, the Bunsen burner can be ignited with a spark. The statement is true. A Bunsen burner is commonly used in a chemistry lab to heat substances. It requires a fuel source, often methane, which is a key component of natural gas.
Once the methane is supplied, the Bunsen burner can be ignited with a flame or a spark, initiating a combustion reaction where methane reacts with oxygen to form carbon dioxide and water.
This reaction is not just the generation of heat; it also involves an increase in temperature and pressure, which are described by the ideal gas law equation PV = NKBT, where temperature (T) directly affects the pressure (P) in a contained volume (V).