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What do understand by glass transition temperature. Explain whether it is exothermic or endothermic?
glass transition is a change in state. when the state changes from crystalline or rather glassy to a rubbery like state. it should be noted that it is not melting. it is a state change and not a phase change. it is endothermic phenomena because heat is given to a system so that glass transition occurs. because no heat is released during the process it can not be considered to be endothermic.
What is the thermochemical equation for endothermic changes?
A + B + Heat → C, ΔH > 0
Is sublimation exothermic or endothermic?
Sublimation is an endothermic phase transition from solid to gaseous state.
Is freeezing endothermic or exothermic?
Freezing is exothermic, as the substance that is freezing loses energy to its surroundings.
Is a maned wolf endothermic or ectothermic?
Yes. A wolf is endothermic, able to maintain its own body temperature. It is a mammal, and mammals and birds are endothermic. The term 'endothermic' is the biological term for an animal that is warm-blooded.
Which state changes are exothermic and endothermic?
freezing is exothermic, melting is endothermic, evaporation is endothermic, condensation is exothermic.
The change in which ice absorbs energy and melts is?
An endothermic change; or a change of state. Endothermic because it absorbs energy. Change of state because ti changes from a solid to a liquid.
What is the difference between ectothermic and endothermic?
endothermic is when something changes from to hot to cold and ectothermic is when something changes from cold to hot.
What contrast endothermic and exothermic changes?
Exothermic: release of heat Endothermic: absorption of heat
What do understand by glass transition temperature. Explain whether it is exothermic or endothermic?
glass transition is a change in state. when the state changes from crystalline or rather glassy to a rubbery like state. it should be noted that it is not melting. it is a state change and not a phase change. it is endothermic phenomena because heat is given to a system so that glass transition occurs. because no heat is released during the process it can not be considered to be endothermic.
Which of the changes boiling freezing and condensation is endothermic?
For boiling energy is needed, so it's endothermic.
A change in matter in which energy is taken in is an endothermic change?
Its where heat is taken in in a reaction eg making a cake is an endothermic reaction as heat is taken in to start it ;)
A change of state reaction that absorbs energy is endothermic?
yes it is endothermic
What are 2 phase changes that are endothermic or absorbing energy?
Solid to liquid (melting). Liquid to gas (vaporization). Solid to gas/ vapor (sublimation). That's three endothermic changes. :)
What are the phase changes that are endothermic?
For example melting or boiling.
What 2 states of matter are endothermic changes?
evaporation
What are the changes of endothermic?
Electrolysis of water to oxygen and hydrogen gas
