AS90946 GUIDE TO REPORT WRITING 2020 INTRODUCTION Brief description of your chosen musical instrument (any information you have found on it’s history, creation, different materials used to create it) Name the two metals you will be focusing on If they are part of an alloy – name the alloy and then the two metals that make up that alloy (percentage of each metal in the alloy). What is the Chemical Symbol for your metal? (Marking schedule – required for Achieved) WELCOME Kia ora – be prepared to do awesome mahi! First – create a Word Document (this will be your report) and call it “AS90946 Metals Instruments your name” Share this document with me (and make sure you have shared all your research) Then follow these slides and start writing INSTRUMENT COMPONENTS (PARTS) Describe what part/parts of your instrument each metal is used for (you can use text boxes and label the image) (Marking schedule – required for Achieved) 1 – METAL PROPERTIES - ALLOY Describe the chemical and/or physical properties of your alloy Eg Bronze is a combination of “metal a” and “metal b” – it is (choose from key terminology – conductive/lustrous/malleable/ductile/hard/soft/dense/corrosion resistant/reacts or doesn’t react with; water, oxygen, acid). Pick which apply the most. (Bronze is an alloy of copper and tin – it is highly ductile, doesn’t spark when struck, brittle (but less than iron), oxidises to form coloured tarnish, 88% copper, 12% tin, golden in colour, unreactive with water) (Marking schedule – required for Achieved) 2 – METAL PROPERTIES – METAL “A” (OR FIRST METAL IF NOT PART OF AN ALLOY) Describe the physical properties of your first metal Eg Magnesium is a (choose from key terminology – conductive/lustrous/malleable/ductile/hard/soft/dense). Explain eg very malleable? Not malleable? Very soft? Dull or highly lustrous? (egMagnesium is a very soft metal, a dull silvery colour, it is shiney and grey. It is less dense than aluminium. It becomes more ductile when alloyed with small amounts of other metals). What colour is your metal? Anything else? (eg belongs to group 2 of the periodic table, electron configuration?) Describe the chemical properties of your first metal Eg Magnesium is a (corrosion resistant? Reacts or doesn’t react with; water, oxygen, acid. What sort of reaction does it have?). Pick which apply the most. (egMagnesium is highly reactive with oxygen and burns with a bright white light – reference on back page) (Marking schedule – required for Achieved) 3 – METAL PROPERTIES – METAL “B” (OR SECOND METAL IF NOT PART OF AN ALLOY) Describe the physical properties of your second metal Eg Lead is a (choose from key terminology – conductive/lustrous/malleable/ductile/hard/soft/dense). Explain eg very malleable? Not malleable? Very soft? Dull or highly lustrous? (egLead is a bluishwhite lustrous metal. It is very soft and highly malleable. A poor conductor of electricity.) What colour is your metal? Anything else? (eg belongs to group 2 of the periodic table, electron configuration?, Describe the chemical properties of your second metal Eg Lead is a (corrosion resistant? Reacts or doesn’t react with; water, oxygen, acid. What sort of reaction does it have?). Pick which apply the most. (egLead is very resistant to corrosion, but does tarnish in air – reference on back page) (Marking schedule – required for Achieved) IMPLICATIONS – REASONS YOUR METALS ARE USED Describe the properties of your alloy/metals have that are the reason they are used in your instrument: (egLead is very dense, which is why it’s used in sinkers; best cymbals are cast from bronze, then rolled, pressed into shape and hammered to create unique sound quality (reference), this is because bronze is malleable. Describe why the combination of metals in an alloy add to malleability). As an aside – when ever it mentions sound quality you CAN use sonorous to describe metals used in musical instruments; however that is NOT A REQUIREMENT for this Achievement Standard. (Marking schedule – required for Achieved) EXPLANATION OF METAL USE IN INSTRUMENTS, LINKED TO PROPERTIES Describe the key property of each metal, and why this property is so important to how the metal is used in your instrument (eg Because bronze is malleable, and is also not easily broken (discuss metallic bonding) it is easy to shape into cymbols, and can withstand the constant hitting. Since it is not brittle it will not easily break with repeated percussion – reference). If discussing reactivity with water or acid to show how it will react – word equations are fine at this level (Marking schedule – required for Merit) METALLIC BONDING – WHERE ALL PROPERTIES COME FROM Adding in information about this is a good way to show your understanding of physical and chemical properties EXPANDING LINKS TO PROPERTIES AND USE IN INSTRUMENT AND JUSTIFYING WHY CHEMICAL/PHYSICAL PROPERTIES ARE IMPORTANT This is where it is useful to compare/contrast why your metals are the best ones for use in this instrument: This is where you can compare/contrast why your metals are the best ones for use in this instrument: Why would other metals not be useful – name some that could be too reactive, or too soft, or too hard etc Why your metals properties that make it good to use in your instrument also make it useful for other things (eg jewellery, machine parts, surfaces exposed to nature) and again why other metals wouldn’t A good place to add symbol equations for how your metals react with oxygen or water or acid – link to usefulness in your instrument (Marking schedule – required for Excellence) CONCLUSION Summary of how amazing your metals are, how useful for society, especially for your musical instrument Remember – this report needs to be in your own words – you can summarise, condense, and put into your own words the information you found, just make sure you add REFERENCES for all information sources. REFERENCES https://www.britannica.com/science/lead-chemical-element https://www.thoughtco.com/bronze-composition-and-properties-603730 https://copperalliance.org.uk/knowledge-base/education/education-resources/copper-alloys-music/
