exothermic and endothermic reactions Flashcards
exothermic reactions
Release energy in the form of heat, light or electrical energy
can have a fast or slow reaction
what do exthomeric reactions have
a lot of energy stored in the bonds between atoms
What if you break bonds in exthomrmic reactions
energy is released
How much energy does forming the product need in exothermic reactions
requires less chemical energy then the reactants
Endothermic reactions
chemical reactions that absorb heat into its environement
What does energy do in exothermic reactions
energy isn’t used by products but instead released into surroundings as heat or light.
Why does energy in endothermic reactions have to be absorbed by an external source
The energy stored in the
bonds of reactants are not enough to
create the products
What do endothermic reactions feel like
cold(to touch)
example of endothermic reaction
For photosynthesis to
occur, plant cells need to absorb
energy from sunlight
example of exthomeric reaction
respiration or combustion reaction
difference in energy in exothermic and endothermic reactions
Exothermic reactions the
products have less energy than the
reactants.
In Endothermic reactions the
products have more energy than
the reactants.
in exthmoeric reactions, the reactants have
more energy then the products
in endothermic reactions, reactants have
less energy then the product
In exothermic reactions, the temperature of the surroundings
Increases
In endothermic reactions, the temperature of the surroundings
decreases
