‘A High Performing Specialist Academy’
AS Level Chemistry
Introduction: Welcome to AS Chemistry!
Your first module is made up of two topics:
1. Elements for Life; where we will study the following areas
; atomic structure
; radioactivity: fission and fusion
; chemical equations and amount of substance
; the Periodic Table and Group 2 chemistry
; bonding and the shapes of molecules
As you can see some of these topics are new but mostly we will be extending your
knowledge from GCSE chemistry.
2. Developing Fuels; we will look at:
; organic chemistry: alkanes, structural isomers
; introduction to entropy
; dealing with polluting exhaust emissions
The environmental issues you are probably all aware of from watching the news and reading papers, you will understand the chemistry behind the headlines.
To get you stated with the first topic, your summer task is concerning the history
behind the atom and how its structure was developed. It’s essential that you complete this task. There will be testing early in the new term on GCSE content such
as Mole calculations and atomic structure and bonding. To help your understanding of the calculations there are a set of help sheets attached with
exemplars and questions.
Year 12 Chemistry teachers will include: Dr Ovens (Curriculum Leader for Chemistry), Mr. Gingell and Mr. Wiggall. Enjoy your holidays and we look forward to seeing you in a few weeks!
Task: Research on the following scientists and produce a poster or leaflet on…
…Who were they, what did we think the atom looked like before, what was their
experiment, what did they expect to see and what did they actually see? What did
they think the atom looked like after they’ve made their discoveries?
; Ernest Rutherford
; Joseph John Thompson
; Niels Bohr
; John Dalton
; James Chadwick
Additional: Help sheets: Moles helpsheet
Useful Websites: http://www.bbc.co.uk/bitesize/higher/
Due: To be handed in to your teacher at the start of your first chemistry lesson in
Set by: If you have any queries regarding the task set please contact Chemistry teacher
Mr. Gingell email to: firstname.lastname@example.org
Expected Time 2-3 hours
; The standard unit of amount of a substance
; The number of particles in a mole is known as Avagadro’s Constant (L)
23-1; Avagadro’s Constant has a value of 6.023x10 mol
-23Example: If one atom has a mass of 1.234x10 g
-2323 Then on mole of atoms will have a mass of 1.234x10 g x 6.023x10 = 7.432g
; Q1. Calculate the mass of one mole of carbon-12 atoms.
-24-24-28[mass of 1 proton = 1.672x10g, mass of 1 neutron = 1.674x10g, mass of 1 electron = 9.109x10]
Substances mass g or kg
-1-1 Molar mass g mol or kg mol
Example: Calculate the number of moles of oxygen molecules in 4g