The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!
From the Wiki University
What evidence can you provide to prove your understanding of each of the following citeria?
Demonstrate knowledge of basic chemical concepts relevant to metallurgical processes
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The structure of atoms is described including sub-atomic particles, charge, atomic number, mass number, and valency . Completed |
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The properties of elements is determined from the periodic table of elements. Completed |
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The three states of matter are described in terms of shape, volume, and compression. Completed |
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Boyles and Charles laws are used to determine the relationship between volume, temperature, and pressure for a gas. Completed |
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Elements, compounds and mixtures are defined and examples given Completed |
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Chemical formulae are used Completed |
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The difference between organic and inorganic compounds is described Completed |
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Ionic, covalent, and metallic bonding are described. Completed |
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The relationship between temperature and the kinetic energy of particles is identified Completed |
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The concepts of latent and sensible heat are described. Completed |
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Contrast the physical properties of crystalline solids.
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Solids are categorised from their physical properties Completed |
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The physical properties of crystalline solids are related to the nature of the forces between particles. Completed |
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Define the key chemical properties of metals.
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The activity of metals and other key properties are described in terms of their position on the Periodic Table. Completed |
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The importance of first ionisation energy in determining the relative reactivity of metals is described. Completed |
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Completed |
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Define the key chemical properties of acids and bases.
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Definitions of acids and bases are described. Completed |
Evidence:
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The pH scale is described and applied Completed |
Evidence:
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The relationship between an acid and its conjugate base and a base and its conjugate acid is described Completed |
Evidence:
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A range of salts which form acidic, basic or neutral solutions are identified and their acidic, neutral or basic nature explained Completed |
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Strong and weak acids and bases are defined and identified. Completed |
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Completed |
Evidence:
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Analyse chemical reactions
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Chemical reactions are described using appropriate balanced chemical equations Completed |
Evidence:
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Chemical reactions between elements and compounds are explained in terms of atomic structures and periodicity Completed |
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The heat of reaction in chemical reactions is determined. Completed |
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Factors affecting reaction rate are explained including concentration, surface area, pressure, temperature and catalysis Completed |
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The stoichiometry of a reaction is used to determine amounts of reactants consumed/products made Completed |
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