Edexcel GCSE Chemistry 2CH01 - Unit C2a Topic 1-3

Class notes for the 2011 Edexcel GCSE

Chemistry Unit C2 Topic 1-3 - Atomic Structure, Ionic Compounds & Covalent Compounds

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Preview of Edexcel GCSE Chemistry 2CH01 - Unit C2a Topic 1-3

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Chemistry C2a Topics 13
Biology
C1 Atomic Structure
Science Chemistry
C2 Topic 1 Electron Configuration
Periodic Table
Topic 2
Topic 3
Physics
Draw a picture of a nitrogen atom
protons
neutrons
electrons
Annotate your diagram to show the structure and
properties of the atom.

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Chemistry C2a Topics 13
Electron
-charge,
Proton no mass
+charge,
relative mass of 1
Electron Shell
holds electrons in orbit
around the nucleus
Neutron
no charge, Nucleus
relative mass of 1 contains protons and
neutrons
Complete a key for this diagram - include
definitions
atomic mass
= protons + neutrons
atomic name 14
specific to atomic symbol
different languages
N used by all
nationalities
nitrogen
atomic number
= protons only 7…read more

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Chemistry C2a Topics 13
On the blank periodic table you need to show the element
name, symbol, atomic number, mass number and protons,
electrons & neutrons
35.…read more

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Chemistry C2a Topics 13
Atomic models
Our knowledge about atoms has changed over time.
Look at the model you've been given. In pairs summarise
the information ready to present to the class.
DALTON : Atoms of a given element are identical in size, mass, and other
properties atoms of different elements differ in size, mass, and other
properties.…read more

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Chemistry C2a Topics 13
Answer the following question
How and why has our understanding of the atom
changed over time?
For the higher grades, include names of scientists, details
of experiments that they did and as many key words as you
can.…read more

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Chemistry C2a Topics 13
Electronic Structure
Electrons are arranged in different shells around the
nucleus. The innermost shell - or lowest energy level - is
filled first. Each succeeding shell can only hold a certain
number of electrons before it becomes full. The innermost
shell can hold a maximum of two electrons, the second
shell a maximum of eight, and so on.
Complete the table
The electronic structure of an atom is a description of how the
electrons are arranged.…read more

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Chemistry C2a Topics 13
Now show the electron configuration of the first 20
elements. Include the ratio form for each one.…read more

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Chemistry C2a Topics 13
Complete the sheet to summarise what
you know so far
DART Activity
Key words
proton nitrogen
sodium neon
Do you need some help?
chlorine energy
mass number neutron
electron hydrogen
nucleus calcium
Biology
C1 Atomic Structure
Science Chemistry
C2 Topic 1 Electron Configuration
Periodic Table
Topic 2
Topic 3
Physics…read more

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Chemistry C2a Topics 13
The Periodic Table
The periodic table is a very important part of
chemistry. It brings all of the chemical elements
together and places them onto a chart. The position of
an element is of crucial importance.…read more

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Chemistry C2a Topics 13
Elements are placed in groups, all of which react in a similar way.…read more

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