Explain what occurs during an endothermic reaction?

explain what occurs during an exothermic reaction.

give at least two everyday life examples of each process.

come up with one practical use for an endothermic reaction or an exothermic reaction.

sorry its a lot, but for the ! : d

An Endothermic Reaction occurs when the energy used to break the bonds in the reactants is greater than the energy given out when bonds are formed in the products

An Exothermic reaction is one that releases energy in the form of heat or light.

Exothermic Reactions: Rust and Setting of Cement 
Endothermic Reactions: Photosynthesis and evaporation.

One example of an endothermic reaction is Ice packs. The packs that deliver instant cooling when a seal inside is broken. It works by having water and ammonium nitrate in separate compartments and then when you break the seal between them they mix. The reaction is endothermic so it takes in heat from the surroundings so the pack become cold.

I hoped this helped you!

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer