Summary
Summary GCSE Chemisty Edexcel - Paper 2 - Topic 7 - Energetics
- Course
- Institution
Everything you need for Energetics, concise and easy to follow notes
[Show more]
Seller
Follow
robinsaldanha7
Content preview
A graph that shows how the energy in a raction changes as thereactions progresses Basics
Graph starts at the energy level of the reactants and finishes with
the energy level of the products
Difference between the enegry or the reactans and products Overal energy change
Can be found by looking at the different in height on the graph
Reactants have more enegry than the products
In an exothermic reaction...
Energy is released
Reaction profile starts high and finishes lower than where it started
Products have more enegry than the reactants Enothermic or Exothermic
Energy is taken in during the reaction
In an endothermic reaction...
Reaction profile starts low and finishes higher than where it started
The minimum amount of energy the reactant particles need when
they collide in order to react
If the input energy is less than the activation energy there won't
be enough energy to start the reactions, nothing will happen
Activation energy (Ea)
You can find the Ea from its reaction profile by looking at the
difference between where the curve starts and the highest point
You can measure temperature change when dissolving salts by
adding the salt to a polestyrene cup of water and measuring the
change in temperature Dissolving salts in water
Dissolving ammonium chlordie is endothermic
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller robinsaldanha7. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R70,50. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75057 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now