When handling a metal pan that has been heated on a stove, an oven mitt should always be used to avoid receiving burns. Which of the following is a physical property of the metal pan that requires the use of an oven mitt when it is hot?
a
low magnetism
b
high thermal conductivity
c
high solubility
d
low thermal convection
b
high thermal conductivity
The correct answer is b. high thermal conductivity.
Explanation: High thermal conductivity means that the metal pan can transfer heat quickly and efficiently. When the pan is heated on a stove, it will quickly reach a high temperature. Without an oven mitt, touching the hot pan can result in burns due to the rapid transfer of heat from the pan to your skin. Using an oven mitt provides insulation and protects your hand from direct contact with the hot metal.
To determine the physical property of the metal pan that requires the use of an oven mitt when it is hot, we need to consider the characteristics of the metal.
a) Low magnetism: This property is not directly related to the heating of the pan or the need for an oven mitt. Magnets do not play a role in handling hot metal pans.
b) High thermal conductivity: This property is the ability of a material to conduct heat. Metals generally have high thermal conductivity, which means they can transfer heat quickly. When a metal pan is heated on a stove, it quickly becomes hot, making it uncomfortable or dangerous to touch without proper protection. Therefore, this is the correct physical property that requires the use of an oven mitt.
c) High solubility: Solubility refers to the ability of a material to dissolve in a specific solvent. This property is unrelated to the need for an oven mitt when handling a heated metal pan.
d) Low thermal convection: Thermal convection refers to the transfer of heat through the circulation of a fluid, such as air or water. While thermal convection can affect the overall heating of a metal pan, it is not the primary reason an oven mitt is needed.
In conclusion, the physical property of the metal pan that requires the use of an oven mitt when it is hot is b) high thermal conductivity.