Cheatography
https://cheatography.com
A complete cheatsheet for the IGCSE Chemistry Theory Paper
This is a draft cheat sheet. It is a work in progress and is not finished yet.
States of Matter - characteristics of states
Characteristic |
Solids |
Liquids |
Gases |
Shape |
Fixed |
Variable |
Variable |
Volume |
Fixed |
Fixed |
Variable |
Compressibility |
Not compressible |
Very little |
Compressible |
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States of Matter - arrangement of particles
Mixtures and Compounds
Mixtures |
Compounds |
Contains 2+ substances |
Contains 1 substance |
Variable composition |
Fixed composition |
Formation involves chemical change |
Formation involves physical change |
Properties of component elements |
Properties differ from component elements |
Easy separation by physical means |
Can only be separated chemically |
|
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States of Matter - changes in state
Elements, compounds and mixtures
Subatomic particles
Particle |
Relative mass |
Relative charge |
Proton |
1 |
+1 |
Neutron |
1 |
0 |
Electron |
0 |
-1 |
|
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Diffusion of NH3 and HCl
HCl has a molecular mass of 36.5
NH3 has a molecular mass of 17
Since the mass of NH3 is less than that of HCl, NH3 diffuses faster.
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