Summary
Summary Stoichiometry - Grade 10
- Course
- Physical Sciences
- Institution
- 10th Grade
My grade 10 stoichiometry notes for chemistry.
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Stoichiometry- Matter changes in two ways
o Physical change
o Chemical Change
Physical Change of matter
- Particles of the substance are not broken up but rather change their physical
state (Solid, Liquid, Gas)
Types of Physical Changes: Solid Liquid Gas
- Conduction – the transfer of heat through an
object
- Dissolution – Dissolving one substance within
another
- Phase Change – Solid to Liquid/Solid to Gas…
Chemical Change of matter
- New substances are formed out of the old substances
The Law of Conservation of Mass
- Matter will always stay the same in a chemical change (mass is conserved)
- BUT the number of molecules is not conserved
Chemical Calculations
Molar Mass and the Mole Concept Moles and Volume
n = mole (mol) n = mole (mol)
m = mass (g) V= volume (dm3)
M = molar mass (g/mol-1) Vm = molar volume (mol/dm3)
One mole = 6,02 x 1023 Vm = 22.4 dm3
S.T.P: The standard degree°C and pressure of a gas (1 mol = 22.4 dm 3)
Concentration And dillution
Unit = mol/dm 3
Concentration is the amount of solute dissolved in a solution
P a g e 1 Stoichiometry
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