HSC Together Year 11 Chemistry: Stoichiometry and The Law of Conservation of Mass

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Stoichiometry and The Law of Conservation of Mass

What does Stoichiometry Tell us about Conservation of Matter?

This post will relate stoichiometry and the law of conservation of mass for Prelim Chemistry.

Topic: Chemical Reactions and Stoichiometry

  • Relate stoichiometry to the law of conservation of mass in chemical reactions by investigating:
    • Balancing chemical equations
    • Solving problems regarding mass changes in chemical reactions

 

The Law of Conservation of Mass

The law of conservation of mass states that the total mass in an isolated system (a system whereby no energy nor matter can be exchanged with surroundings) will not change. This video will go through a little more about the law.

 

This video goes through the law of constant proportions which might enhance your understanding of stoichiometry.

 

This video has a few examples of mass conservation and questions.

https://www.youtube.com/watch?v=hVVpSx7hA1Q

 

Balancing Chemical Equations

This video will go through balancing chemical equations which is important to fulfil the stoichiometric relationship between reactants and products.

 

A little practical

This video shows how mass will be conserved (note that it is an open system here – a system whereby both matter and energy can be exchanged with the environment, not an isolated system).

 

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