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What does endithermic change mean?
Endothermic change is a chemical reaction that is accompanied by the absorption of heat, or it is an organism that generates heat to maintain its temperature. When a chemical reaction occurs, energy is transferred to, or from, the surroundings. There is often a temperature change. An example would be that of a bonfire which transfers heat energy to the surroundings.
Physical and chemical changes can be either exothermic or endothermic changes?
The two terms are probably used most often to describe chemical reactions - whether or not they absorb or require heat (endothermic) or create release heat (exothermic). However, since the terms simply mean "absorbing heat", and "giving off heat", they can be used to describe any such event, physical, chemical or nulear. Ray
What is a new substance that forms as the result of a chemical reaction is a gas?
An example of a new substance that forms as a gas during a chemical reaction is carbon dioxide (CO2). This gas is often produced when carbon-containing compounds, such as glucose, burn in the presence of oxygen.
Does exothermic mean warm blooded?
No, exothermic refers to chemical reactions that release heat energy. Warm-blooded refers to animals that can regulate their body temperature internally.
What chemical bond possess low latent heat of fusion?
Latent heat of fusion (or enthalpy of fusion) is a characteristic of a substance, rather than a chemical bond. If you mean enthalpy of reaction then the lowest absolute values are for the bonds in H2, F2, and Cl2 as gases, which are zero. One low (and negative) value is for cuprous sulphate. Please see the link.
What energy transformation occurring in a camfire?
In a campfire, chemical energy stored in the wood is converted into heat and light energy through the process of combustion. The heat produced from the fire can be used for warmth or cooking, while the light energy is visible as the flames.
What does the term solar heat mean?
it means heat produced by the sun
What is released when chemical bonds are broken?
"This is a difficult question to answer exactly since (1) potential energy is not something that is directly measured - it can only be deduced from the heats produced or absorbed in a transformation, and (2) the heat produced or absorbed (enthalpy) in a chemical transformation vary from substance to substance. In general, we expect that when chemical bonds are formed, energy is released - imagine the individual atoms as having energy and have to be slowed down in order that chemical bonds can form. Alternatively, and more accurately, when two atoms spontaneously form a chemical bond it must mean that the entropy of this system has increased, since two separate atoms have more disorganization (entropy) then one complete molecule, then in order for the process to be spontaneous (entropy increases), there must be some heat released. The problem now is relating heat to potential energy. I would rather you relate this to internal energy rather than potential energy (which is not quite directly applicable to chemical systems). If we think of internal energy, we know, by definition, that internal energy is a function of the heat and work that goes in and out of the system. Since most chemical transformations do not involve work, then internal energy is mostly a function of the heat that enters or leaves the system. Thus, when a chemical bond is formed spontaneously, heat leaves the system, the internal energy of the system goes down. You may then think of internal energy as a kind of potential energy and say that because the system is less energetic (since heat left the system) that it must now have a lower potential energy."
Is lighting a match a chemical change change?
Burning a match is a chemical change. Whether the act of lighting it is makes for an interesting philosophical discussion. Exactly what do we mean by lighting it? Is it the movement of striking? In which case, no, that's just motion, so that's physical. Is it the application of heat, from friction or otherwise? Again, no new substance is produced at that point, so no. Do we mean the beginning of flame? Yes, as soon as it's burning, new substances are being produced.
Does organic mean good produced?
Not necessarily. It means produced or involving production without the use of chemical fertilizers, pesticides, or other artificial agents.
What does on fire mean?
chemical reaction of HEAT, FUEL & OXIGEN(O2) that is call FIRE.
What happens to the heat in a system and in the surroundings in an exothermic reaction?
In an exothermic reaction, heat is released from the system to the surroundings, resulting in a temperature increase in the surroundings. The heat lost by the system is gained by the surroundings, increasing their thermal energy.
What dose triangle H soin mean in cemistry?
In chemistry, a triangle symbol (∆) typically represents a change in a system. For example, ΔH represents a change in enthalpy, which is a measure of heat energy in a chemical reaction.
What does endithermic change mean?
Endothermic change is a chemical reaction that is accompanied by the absorption of heat, or it is an organism that generates heat to maintain its temperature. When a chemical reaction occurs, energy is transferred to, or from, the surroundings. There is often a temperature change. An example would be that of a bonfire which transfers heat energy to the surroundings.
What does it mean when the heat energy is negative?
A negative value for heat energy typically indicates that heat is being released or removed from a system, resulting in a decrease in temperature. This could occur during processes like heat transfer, where heat flows out of a system, leading to a decrease in thermal energy.
What does chemical energy mean in physics?
chemical energy,Energy stored in the bonds of chemical compounds. Chemical energy may be released during a chemical reaction, often in the form of heat; such reactions are called exothermic. Reactions that require an input of heat to proceed may store some of that energy as chemical energy in newly formed bonds. The chemical energy in food is converted by the body into mechanical energy and heat. The chemical energy in coal is converted into electrical energy at a power plant. The chemical energy in a battery can also supply electrical power by means of electrolysis.
What is the average heat for wood?
Not sure of your question- if you mean what is the heat produced by burning wood, it varies with the type of wood. See the link at the bottom of the page for more information on heat value of wood. If you mean the temperature at which wood ignites- again, that varies, but between 455 and 500 degrees F.
