Turn on thread page Beta

What do I need to know about atomic structure for edexcel additional science (C2) ? watch

    • Thread Starter

    Please can someone tell me what I need to know for atomic structure?

    (Original post by JackT2000)
    Please can someone tell me what I need to know for atomic structure?
    You need to be aware that atoms have protons, neutrons and electrons. You need to know their masses and charge as well, A proton has a charge of 1 and a relative mass of 1. Neutron: Charge is 0 while relative masss is 1 and electron has a charge of minus 1 and a relative mass of 1/2000 or (neglected. Basically the mass of an electron is so small that you don't really consider the mass at all).

    You need to know that the protons and neutrons are packed together in the centre of the atom that is called the nucleus which is extremely small compared to the overall atom. Most of the atom is actually empty space. In addition, electrons orbit the nucleus.

    Atoms are distinguished by the number of protons they have. So for example, if an atom has 1 proton its a hydrogen atom if has 6 protons it's carbon and if it has 11 protons it's always a sodium atom.

    As for the number of electrons atoms usually have the same amount of protons as they do electrons. So a hydrogen atom has 1 electron, carbon 6 and sodium, 12. (This however can change and you'll learn about it but I don't think this stuff comes under atomic structure)

University open days

  • University of East Anglia
    UEA Mini Open Day Undergraduate
    Fri, 23 Nov '18
  • Norwich University of the Arts
    Undergraduate Open Days Undergraduate
    Fri, 23 Nov '18
  • Edge Hill University
    All Faculties Undergraduate
    Sat, 24 Nov '18
Black Friday: Yay or Nay?
Useful resources

Study tools


Essay expert

Learn to write like a pro with our ultimate essay guide.

Thinking about uni already?

Thinking about uni already?

See where you can apply with our uni match tool

Student chat

Ask a question

Chat to other GCSE students and get your study questions answered.


Make study resources

Create all the resources you need to get the grades.


Create your own Study Plan

Organise all your homework and exams so you never miss another deadline.

Resources by subject

From flashcards to mind maps; there's everything you need for all of your GCSE subjects.


Find past papers

100s of GCSE past papers for all your subjects at your fingertips.

Help out other students

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.