What of the following is an advantage of the thermal properties of plastic
(1) Heating plastics eliminates the risk of BPA exposure.
(2) The thermal conductivity of plastic is very high, making it a good material to transmit heat.
(3) Plastics are safe to use in microwave ovens.
(4) Plastics are easy to mold into any shape.
4
Well, let's see:
(1) Heating plastics eliminates the risk of BPA exposure - Nope, that's not an advantage. It's like saying burning down your house eliminates the risk of termites.
(2) The thermal conductivity of plastic is very high, making it a good material to transmit heat - Nah, plastic is more like a bad communicator when it comes to heat. It's more about keeping things hot or cold, rather than transferring heat efficiently.
(3) Plastics are safe to use in microwave ovens - Well, technically, yes. But let's be honest, nothing screams gourmet meal like a microwaved plastic container, right?
(4) Plastics are easy to mold into any shape - Now we're talking! Plastic can be shaped into all sorts of crazy and creative shapes. So, if you're ever in the mood for a T-rex-shaped coffee mug, plastic is your friend.
So, out of these options, it looks like the best advantage of the thermal properties of plastic is its ability to be molded into any shape. Who doesn't love a bit of versatility, right?
The correct advantage of the thermal properties of plastic among the options provided is:
(2) The thermal conductivity of plastic is very high, making it a good material to transmit heat.
To determine which of the following options is an advantage of the thermal properties of plastic, let's evaluate each statement:
(1) Heating plastics eliminates the risk of BPA exposure.
Explanation: BPA stands for bisphenol A, which is a chemical compound used in the production of certain plastics. Heating plastics, especially at high temperatures, can potentially lead to the release of BPA into food or beverages, which may be harmful to humans. Therefore, this statement is not an advantage of the thermal properties of plastic.
(2) The thermal conductivity of plastic is very high, making it a good material to transmit heat.
Explanation: Thermal conductivity refers to the ability of a material to conduct heat. When a material has high thermal conductivity, it can efficiently transmit heat. However, plastics generally have low thermal conductivity compared to metals or ceramics. Therefore, this statement is not an advantage of the thermal properties of plastic.
(3) Plastics are safe to use in microwave ovens.
Explanation: This statement is an advantage of the thermal properties of plastic. Many types of plastics are safe to use in microwave ovens because they are not significantly affected by the heat generated in the microwave. As a result, plastic containers or wraps can be used without the risk of melting or releasing harmful substances into the food.
(4) Plastics are easy to mold into any shape.
Explanation: This statement is not directly related to the thermal properties of plastic. It describes the general property of plastic being easily moldable. While heat can be used to soften and shape plastic, this statement does not specifically address the advantages related to thermal properties.
Based on the analysis, the correct answer is:
(3) Plastics are safe to use in microwave ovens.