Which is a chemical property of hydrogen?
A. It is a light gas.
B. It is a combustible gas.
C. It is a colorless gas.
D. It has a boiling point of -252.87°C.
E. It is a good conductor of electricity.
It is a combustible gas.
Thank you, Bob.
The correct answer is B. It is a combustible gas.
To determine which property of hydrogen is a chemical property, we need to understand what chemical properties entail. Chemical properties are characteristics of a substance that can only be observed or measured by changing the composition of the substance through a chemical reaction.
In the given options:
A. "It is a light gas" refers to a physical property of hydrogen, as it describes the weight or density of the gas.
B. "It is a combustible gas" is a chemical property because it describes how hydrogen can react with oxygen to produce a flame and release energy.
C. "It is a colorless gas" describes a physical property, specifically the absence of color.
D. "It has a boiling point of -252.87°C" is another physical property that relates to the temperature at which hydrogen changes from a gas to a liquid phase.
E. "It is a good conductor of electricity" is an incorrect statement because hydrogen is a poor conductor of electricity. It is a diatomic gas and does not have free-moving charge carriers.
So, the correct answer is B. It is a combustible gas, as it describes a chemical property of hydrogen based on its ability to undergo combustion.