exothermic and endothermic reactions

janey.efen
Slide Set by , created almost 4 years ago

GCSE Chemistry (unit 3) Slide Set on exothermic and endothermic reactions, created by janey.efen on 02/13/2016.

199
32
0
janey.efen
Created by janey.efen almost 4 years ago
Chemistry
Holly Bamford
Key word flashcards
I M Wilson
Chemistry Edexcel C2 topic 1+topic 2 notes
isabellaoliver
Mind Map 1_1
n.marment
Interactive Multimodal Learning Environments
kaylamclaughlin8
chemistry: c2
kristy baker
GCSE Chemistry C2 topic notes
imogen.shiels
Chemistry C2
greenchloe1998
C1, C2, C3 keywords
Jessica Phillips
Chemistry Module C2: Material Choices
James McConnell

Slide 1

Slide 2

    background
    during a chemical reaction, old bonds are broken and new bonds are formedenergy must be supplied to break existing bonds - so the bond breaking is an endothermic processenergy is released when new bonds are formed - so bond formation is an exothermic process

Slide 3

    exothermic
    what is an exothermic reaction?an exothermic reaction is one which gives out energy to the surroundings, usually in the form of heatwhat happens in an exothermic reaction?the energy released in bond formations greater than the energy used in breaking the old bonds

Slide 4

    endothermic
    what is an endothermic reaction?an endothermic reaction is one which takes in energy from the surroundings, usually in the form of heat and usually shown by a fall in temperaturewhat happens in an endothermic reaction?the energy required to break old bonds ins greater than the energy released when new bonds are formed