use-specific-heat-capacity-to-explain-why-metal-keys-left-in-the-sun-are-hotter-than-a-plastic-pai-2

Name: use specific heat capacity to explain why metal keys left in the sun are hotter than a plastic pai 2
Uploaded: 2020-10-18
Duration: 2 min 28 s
Channel: Numerade
Description: Use specific heat capacity to explain why metal keys left in the sun are hotter than a plastic pair of sunglasses left in the sun.

Question

Use specific heat capacity to explain why metal keys left in the sun are hotter than a plastic pair of sunglasses left in the sun.

David Collins · Accepted Answer

question Number five has A A concept very much related to the concept was discussed in question number four that being a substance with a low heat capacity is going to have the greatest change in temperature. Metals typically have low heat capacities because metals have low heat capacities than they typically have a large change in temperature. When energy safe from the sun is added to the metal, have low specific heat capacities, while something like plastic plastic typically has, ah, high heat capacity. There are many different types of plastics, but most plastics have high specific heat capacities. So if we were to take and leave a plastic plate out in the sun and we were to assumed, the same amount of energy would be applied to the plastic per gram as it would to the keys per gram. Because the metal keys have a lower specific heat capacity than plastic sunglasses dio, then the metal keys are typically going to fill warmer in the sun, Then the plastic sunglasses due. However, there&#x27;s another phenomenon that is happening here when you touch plastic, so if you were to touch plastic here, then you would feel the heat associated with just that location because plastic is not very thermally conductive. However, if you were to touch a key here, you would actually feel a lot of the heat from more than that location, because the key is also thermally conductive, so metals typically fill warmer because the heat is transferred to you from more than one location than something like a plastic.

David Collins · Answer

the concepts of heat and temperature can be confusing for many because they&#x27;re definitely related. Heat is energy where temperature is not directly energy. Heat is energy that can be transferred between objects of different temperatures. So this is how heat and energy sorry heat and temperature are related. Temperature is more directly a measurement of the average of of a specific type of energy, the kinetic energy of the randomly moving particles in a substance.

David Collins · Answer

measure the capacity of a piece of metal. The first thing to do is to eat the piece of metal up to a known temperature. This could be done by placing the metal in a test tube and then placing the test tube, which has the metal into boiling water, from which you could measure the temperature. When you know the temperature then of the boiling water, that will be the temperature of the metal. Record that temperature, then take a Styrofoam cup that contains water at room temperature. Measured that temperature and add to it the metal pieces. The metal pieces then should warm up the water and you&#x27;ll measure the final temperature of the water. With this information, you should be able to calculate the specific heat at the metal.

Will Li · Answer

today we&#x27;re talking the difference between specific heat and heat capacity. So the ahi capacity of something is the total amount of heat that it can absorb. So if we think about a huge cup of water, and then maybe this mom a cup of water which is gonna be able to absorb more heat. Of course, because we have so much more water here, the heat capacity of the bigger glasses gonna be higher because it can absorb more heat. So hire he capacity because more total heat now specific heat is a little bit more precise. Specific heat is defined as the amount of heat it takes to raise one gram of a substance by one degree Celsius. So this is to think about comparing different types of substances. So if we think about one gram of water so we could draw out a sort of an ice cube vs, you know, maybe a gram of steel. So we&#x27;re also tried as, ah, black box. So just by thinking about it, do you think it&#x27;ll take more energy to raise the water? This is one gram of water by one degree Celsius or one dream of steel. Now If you&#x27;ve ever boiled water, you know that it takes a ton of time thio boil, even just a little bit of water on the stove. Whereas if you&#x27;ve, you know, ever heated up a pot or heated up anything metal, it&#x27;s gonna heat very, very quickly. And so that&#x27;s because the specific heat of water is so much higher in the opportunity to steal. And so again, this is a little bit of a more precise, uh, characteristic because it allows us to see if we&#x27;re just looking at one gram Now we can kind of compare them in an equivalent manner. So that&#x27;s the difference between us. Is havoc eat or it doesn&#x27;t keep and heat capacity? Thanks for watching.

David Zhang · Answer

So can you have metal bar metal? Say you heat up one end? Um, it&#x27;ll actually have free electrons that move inside around the metal. So these have electrons moving in all directions because they move, Ah, heated electrons faster. So able to move around faster and transfer heat faster, so they built.

Shazia Naz · Answer

a operation. A petition takes place when some more jewels and this offense all feel like it. Look great if enough energy to read d inter molecular versus holding then in the well equipped state fees let me it state well liquid celebrate The more cues there is scared. Here&#x27;s why going to dig energies The average going to dig energy off the remaining world killed Mole cules is lower. Does the temperature of they meet is lower?

Problem

How much energy is required to raise the temperat…

Problem 5 Easy Difficulty

Use specific heat capacity to explain why metal keys left in the sun are hotter than a plastic pair of sunglasses left in the sun.

Answer

Because metals have a lower specific heat capacity than plastic, they experience a greater change in
temperature when they absorb a specifi c amount of energy from sunlight. Plastics are composed of
large molecules that require more energy to cause a rise in temperature than a metal does.

Related Courses

Living by Chemistry

Related Topics

Discussion

Top Chemistry 102 Educators

Stephanie C.

Lizabeth T.

Allea C.

Jacquelin H.

Chemistry 102 Courses

Liquids - Intro

Comparison Of Gases Liquids And Solids

Recommended Videos

Watch More Solved Questions in Chapter 18

Video Transcript

Angelica M. Stacy

Living by Chemistry

Stephanie C.

Lizabeth T.

Allea C.

Jacquelin H.

Liquids - Intro

Comparison Of Gases Liquids And Solids

What do you need help with?

Textbooks

Ask a question

Courses

AI Tutor

Because metals have a lower specific heat capacity than plastic, they experience a greater change intemperature when they absorb a specifi c amount of energy from sunlight. Plastics are composed oflarge molecules that require more energy to cause a rise in temperature than a metal does.

Living by Chemistry

Stephanie C.

Lizabeth T.

Allea C.

Jacquelin H.

Liquids - Intro

Comparison Of Gases Liquids And Solids

Angelica M. StacyLiving by Chemistry

Stephanie C.

Lizabeth T.

Allea C.

Jacquelin H.

Because metals have a lower specific heat capacity than plastic, they experience a greater change in
temperature when they absorb a specifi c amount of energy from sunlight. Plastics are composed of
large molecules that require more energy to cause a rise in temperature than a metal does.

Angelica M. Stacy

Living by Chemistry