When we heat a substance does its potential energy increase?
There are only two types of energy in the world.. potential energy and kinetic energy. Potential energy is to do with the ‘relative’ position of particles with respect to each other (also called configuration), and kinetic energy is to do with the ‘time derivative’ of these relative positions. All other energies are derived from these two.If a particle moves, it gains kinetic energy.. but only if it moves relative to other particles. If ‘all’ particles are moving parallel to each other with the same velocity, then no kinetic energy can be detected. If a particle moves with respect to another, the potential energy is changed. A fundamental law of nature is that the change in potential energy due to a change in the separation distance is exactly equal to the change in kinetic energy (energy conservation). When we have many particles we imagine only two at a time and do superposition to find the result for many particles interacting together.When you touch something hot, the vibrating molecules of the hot surface start banging on those of your finger and cause them to move fast. This is what we call temperature. If you move the molecules too fast (too hot) the electrical forces can’t keep the molecules in your finger together and they change/disintegrate (burn). But if the hot substance molecules have internal oscillation and rotation in addition to simple vibration, we do not feel those motions because they they do not readily transmit to our hand and we do not feel it hot. Water absorbs a lot of knocking (heat) before it becomes hot. A piece of metal on the other hand absorbs very little heat and becomes red hot, because its molecules can’t twist and rotate as much.Because of this extra complication in the molecular motion, the relation between heat addition, temperature and potential energy is not a simple straight forward relation. For example, when you heat ice, it ‘contracts’ and changes to water. But on further heating it ‘expands’. Thus for the same heat addition you can have either increase or a decrease. That is why we do not speak of potential energy in relation to heat, but only of ‘internal’ energy. Internal energy includes all types of energy stored in a substance as a result of heat addition. It is given in terms of a factor called the specific heat times the temperature. The specific heat is different for different substances and different temperatures as well!!
How does the absorption of heat change energy of water?
the heat heats the molecules in the water, causing their kinetic energy to rise because they move faster when it's hot
How does a chemical change differ from physical change?
Hey there Mariposa,A physical change in a substance doesn't change what the substance is.A chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.Physical vs. Chemical ChangesPhysical Vs. Chemical Changes - ExplainedI hope this helps you
What would be the effect of ingesting 100% alcohol? I mean effects to the human body starting from time of absorption.
O.K..... You really want to know?Orally: You down two ounces of 200 proof ethanol. The alcohol strips the mucous lining from your esophagus and some of it absorbs into your blood directly. You feel... pain! You feel like you have just downed liquid fire! You cough and your eyes water. A lot. A few minutes later, you feel.... O.K..., but resolve to use orange juice the next time you want to try that experiment! About 20 minutes later you start to feel the effects of the alcohol because that is how long it takes to be absorbed. Two ounces of 200 proof is the equivalent of four ounces of 100 proof vodka. Your liver can remove about half an ounce per hour, so you will be sober in about 3 and a half more hours.Injection: Well, now! That is a good way to kill yourself. You see, in the above example, your stomach acted as a buffer, slowly metering the alcohol into your system. Injection (by the way, this technique is actually used to kill off nerve cells) bypasses the stomach and you are directly and immediately (within minutes) intoxicated. If you had actually injected three ounces you would have momentarily exceeded the lethal dose for alcohol, but some of it would absorb into your fat before it killed you (probably--I am not a physician or toxicologist, and I do not know how much you weigh, so don't bet your life on this answer). You would feel a significant burning sensation at the spot of injection. Consider that an understatement. Fortunately, in a few minutes you will be too drunk to remember the pain.Have I mentioned that either of these approaches falls in the category of a BAD IDEA? As in "Hey watch this!"
What happens chemically when quick lime is added to water?
When Calcium oxide i.e. quick lime is added to water filled in a bucket, it reacts vigorously with water to produce slaked lime (calcium hydroxide) releasing a large amount of heat.
What is the reaction between sodium hydroxide and water?
NaOH + H2O = Na+ and OH- ions. The reaction will be Exothermic, where heat will be released. Sodium hydroxide is considered a strong base and as such is able to completely and fully disassociate in aqueous solution. The heat evolved as a result of mixing solid sodium hydroxide with water is due to the the -OH ions incredible stability. Heat is emitted as a result of the chemical species being brought to a lower energy state. This phenomena strong enough that sodium hydroxide crystals act as a powerful desiccant (it readily absorbs moisture from the air).
What do you think of CO2 saturation point. Where it takes abundantly more CO2 to have like effects to?
Miskolczi proposed a theory that stated that the amount of warming due to greenhouse gases reaches a saturation point. After that any increases in greenhouse gases will not have any effect on the earth's temperature. In order to disprove this theory on would have to falsify three works 1) Miskolczi's Data 2004 2) Miskolczi's theory 2007 3) Kiehl and Ramanathan 2006 According to Miskolczi no peer reviewed paper has come out to find something wrong with his analysis. Edit: Many people are saying that this paper is poor science, but yet no one has provided a peer review paper to support their claims. Pegminer. I referenced Kiehl and Ramanathan because he found that the equilibrium value of the normalized greenhouse factor of the earth's atmosphere to be 1/3. The exact value found by Kiehl and Ramanathan. This is important to Miskolczi's equations. If the equilibrium is not 1/3 you then have to refute Kiehl and Ramanathan.
What is the scientific name of artylone material or number, i need its data sheet?
Artilon - Artilon is a chemically cross linked polyethylene foam available in roll and sheet form. Artilon differs from Softlon foam in that it has a larger cell structure and rougher surface. It is lightweight, flexible and comes in a wide range of densities, widths and lengths. Being made by the continuous process, it is easily and cost effectively formed into composite products through lamination of fabrics and other materials. Artilon can be supplied in a variety of grades for: Sealing against water, air, dust, etc. Impact / vibration dampening Dynamic pressure absorption (expansion) Polyolefin foam: * Artilon is a closed-cell,chemically cross-linked polyethylene foam available in roll or sheet form. Superior mechanical and physical properties make Artilon suitable for applications that require low water absorption, thermal and chemical insulation, shock absorption, buoyancy and cushioning. Artilon is lightweight, durable, and easily fabricated for a variety of applications in building & construction, automotive, sundry goods, and more. Fire retardant and low thermal conductivity properties make Artilon especially appropriate. GRADE(Code) - Standard : Standard (SH) - Heat Resistance : Heat Resistance(SHH) - Elasticity : Added Ethylene Vinyl Acetate (SHV) - Fire Retardant : Fire Retardant (SHN) - Anti-fungal : Anti-fungal(SHM) - Nonflammable : Sem-Non-Flammable (SHG) - Formability : Fine cell(SHF) =======================================... Artilon is a closed cell, chemically cross-linked polyethylene foam available in roll or sheet form. Superior mechanical and physical properties make Artilon sutable for low water absorption, hermal and chemical insulation, shock absorption, buoyancy and cushioning. Fire retardant grades are available for specification requirements of MVSS 302 and UL 94HF. Artilon is ideal for applications in construction, automotive insulation, specialized packaging and sporting goods. THE WEBSITE BELOW HAS THE TABLES YOU NEED Source(s): http://www.ehwachemical.com/bodyf_03.htm