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Achievement objective MW 7-1

Students will:

  • investigate and measure the chemical and physical properties of a range of groups of substances, for example, acids and bases, oxidants and reductants, and selected organic and inorganic compounds.

Indicators

  • Carries out volumetric acid–base analysis to collect accurate data.
  • Processes data to determine the amount of a substance or pH of a solution.
  • Uses experimental observations to identify and justify the ions present in solution.
  • Collects and collates data on the chemical properties (for example, molecular substances, hydrocarbons, acids, oxidants) of a variety of substances.
  • Identifies trends and patterns in the physical properties (for example, hardness, conductivity, melting and boiling points, solubility) of a range of substances.
  • Identifies trends and patterns in the chemical properties (for example, acidity) of a range of substances.
  • Classifies solids as molecular, ionic, metallic, or network-based, based on observation of the physical properties.
  • Predicts chemical and physical properties of a range of substances, based on the structure of the particles from which the substances are made.
  • Describes chemical reactions of organic substances.
  • Classifies reactions of organic substances as addition, substitution, oxidation, elimination, or acid–base.
  • Identifies factors that affect the rate of a reaction.
  • Predicts chemical reactivity and observations from classification of reagents.

Possible context elaborations

  • Reactions of organic families: compare and contrast.
  • Chemistry in the marketplace: Are all vinegars equal? How much aspirin is in a tablet? What are the most economical conditions for the manufacture of industrial chemicals (for example, urea, ammonia, sulfuric acid, superphosphate) in New Zealand?
  • Which organic chemical is which? Identifying unknowns using the physical and chemical properties of organic compounds.
  • Polyunsaturated vs saturated spreads; the trans fatty acid debate.
  • Are diamonds forever?
  • What’s the use of (for example) diamond, graphite, copper, silicon dioxide?
  • Which ions are the oxidants?
  • Conversion of chemical energy in fuels to heat energy.
  • Conversion of fats and carbohydrates during metabolism.

Assessment for qualifications

At the time of publication, achievement standards were in development to align them with The New Zealand Curriculum. Please ensure that you are using the correct version of the standards by going to the NZQA website.

The NZQA subject-specific resources pages are very helpful. From there, you can find all the achievement standards and links to assessment resources, both internal and external.

Learn more:

Aligned level 1 achievement standards were registered for use in 2011 and level 2 for use in 2012; level 3 will be registered for use in 2013.

Last updated August 18, 2015



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