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An endothermic reaction is one that requires energy to take place (e.g. light or heat energy); breaking bonds in a molecule is always endothermic; and energy is a reactant.
Some examples of endothermic reactions are as follows:
- citric acid and sodium bicarbonate.
- ammonium chloride and water
- a chemical cold pack used in first aid kits
- photosynthesis
- bioluminescence by a firefly
Wiki User
∙ 8y ago
Wiki User
∙ 15y agoAn endothermic reaction is a reaction in which heat is absorbed for the reaction to take place. Eg:- When lead nitrate is heated, it decomposes to lead oxide,nitrogen dioxide and oxygen.
2Pb(NO3)2 +Heat ---->2PbO2 +2NO2 +2O2
Wiki User
∙ 11y agoAmmonium Chloride + Water is an Endothermic Reaction. It is what makes cold packs possible.
Wiki User
∙ 11y agoAny reactions which gives heat to the surroundings are considered to be endothermic reactions. For example, the reaction between an acid and a base is endothermic.
Wiki User
∙ 6y agoAll thermal decomposition reactions are endothermic.
sherinamanzoor150
Complete the question
Megan Reynolds
A reaction that absorbs heat.
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∙ 14y agomelting
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What is a endothermic?
An endothermic reaction is a chemical reaction that absorbs heat from its surroundings. change in H> 0.(6.6)
Which activity is an example of a chemical change?
Cooking is for example a chemical change.
What is striking a match an example of?
Striking a match is an example of an endothermic reaction. It is also an example of simple combustion and a chemical reaction.
Which reason best describes why a Decaying plant is an example of a chemical change?
Because it is chemical change
What are the 5 characteristics of chemical change?
During a chemical change the structure of molecules (as chemical composition) is changed. Signs of chemical reactions may be: - Gas release - Formation of a precipitate - Change of color - Change of odor - Change of pH - Change of aspect - Change of viscosity - Change of the temperature - Visible formation of new compounds
Chemical reaction in which heat is absorbed?
It is an endothermic reaction. An example is thermal decomposition.
Is an endothermic reaction a chemical change?
Yes.
What chemical reaction that absorbs heat called?
Endothermic reactionFor endothermic reactions Hfinal > Hinitial and DH is positive (+DH)It can be for example melting ice, or vaporising Rubbing Alcohol.---------Change of phases are not chemical reactions !
What is a endothermic?
An endothermic reaction is a chemical reaction that absorbs heat from its surroundings. change in H> 0.(6.6)
Why is brownies a chemical change?
Because it is a mixture until it is baked and went through a chemical change and it is an endothermic reaction.
Is melting a penny an exothermic change?
Chemical, since it doesn't turn back.
What is the chemical change and kindly give a example or picture?
Chemical change is a process in which reactants are changed to form one or more than one products. During a chemical change there is rearrangement of atoms i.e, breaking and formation of new bonds.This change is not reversible. For Example: # burning of wood # change in temperature or energy,as in exothermic or endothermic reactions. # formation of precipitate in a reaction.
What are the two types of energy change in chemical reaction?
endothermic and exothermic
The type of chemical change that absorbs heat energy?
Endothermic Reactions :)
When you activate an instant cold pack and water mixes with a chemical and the pack gets very cold what example is this?
It is an example of an endothermic reaction. It is absorbing heat.
Is freezing an example of endothermic or exothermic change?
Exo
Is burn a physical change?
It's an exothermic reaction (oppose to an endothermic reaction). It's combustible reaction, (this is an example of chemical reaction) where a substance must combine with oxygen to produce, heat and light; or Burn.
