Which property can be used to help identify an unknown substance?
Specific Heat
combustion
temperature
Tyndall effect
combustion
The property that can be used to help identify an unknown substance is the Tyndall effect. The Tyndall effect refers to the scattering of light by colloidal particles or suspensions in a transparent medium. When a beam of light passes through a substance, if it exhibits the Tyndall effect, it means that the substance contains particles that are large enough to scatter the light and make it visible. This property can be used as an indicator to distinguish between different substances.
The property that can be used to help identify an unknown substance among the options you've mentioned is specific heat. Specific heat refers to the amount of heat energy required to raise the temperature of a specific amount of a substance by a certain degree. Each substance has a unique specific heat value, which can be measured experimentally.
To identify an unknown substance using specific heat, you would need to measure the heat energy required to raise the temperature of a known amount of the substance by a known degree. Then, you can compare this value to a reference table or database of specific heat values for various substances. If the measured specific heat matches a value in the reference table, you can identify the substance.
However, it's important to note that specific heat alone might not provide conclusive identification of an unknown substance. Other properties, such as combustion behavior, temperature range, and the presence of the Tyndall effect, can also be used together to help make a more accurate identification.