Chemistry 1.4 Demonstrate understanding of aspects of selected elements
Science 1.7 Investigate the implications of the properties of metals to their use in society
This achievement standard involves demonstrating understanding of atomic structure and the organisation of the periodic table, the properties and uses of selected metals, nonmetals and non-metal compounds.
The achievement standard involves carrying out practical activities to investigate the implications of the properties of metals to the way that they are used in society, which may include their extraction.
Achievement Demonstrate understanding involves describing, identifying, naming, drawing, giving an account of, defining aspects of elements. This requires the use of chemistry vocabulary, symbols and conventions including names, formulae and completing word equations.
Merit Demonstrate detailed understanding requires making and explaining links between aspects of elements. This requires explanations that use chemistry vocabulary, symbols and conventions including names, formulae and writing word equations or completing given symbol equations.
Excellence Demonstrate comprehensive understanding will typically involve elaborating, justifying, relating, evaluating, comparing and contrasting, or analysing links between aspects of elements. This requires the consistent use of chemistry vocabulary, symbols and conventions including writing balanced symbol equations.
Achievement Investigate will involve carrying out gathering primary data, making and recording experimental observations, and may include describing, gathering, processing, interpreting, identifying, classifying and giving an account of the physical and chemical properties of metals and the implications of their use in society. This requires the use of chemistry vocabulary, symbols and conventions including names, formulae and writing word equations.
Merit Investigate in detail requires making links between the properties of metals and the implications of their use in society including the reactivity of metals with oxygen, water and / or acid. This requires explanations that use chemistry vocabulary, symbols and conventions including names, formulae and completing symbol equations.
Excellence Investigate comprehensively typically involves elaborating, justifying, relating, evaluating, comparing and contrasting, or analysing the links between the chemical and physical properties of metals and the implications of their use in society. This requires explanations that consistently use chemistry vocabulary, symbols and conventions including writing balanced symbol equations.
Aspects of elements will be selected from: ·atomic structure and the organisation of the periodic table (a periodic table will be provided) –electron configuration (limited to the first 20 elements) –trend down a group (similarity of reaction, reactivity) –trend across a period (position of metals and non–metals). ·properties of metals, their reactivity and uses: –activity series –alloys. ·properties and uses of non–metals and selected compounds: –sulfur, aqueous chlorine, allotropes of carbon and oxygen (ozone) –selected compounds include sulfuric acid, ammonia.
Implications may include the consequences of particular properties on the ways that metals are; used for specific purposes; are extracted from their ores or are prevented from corrosion.
Selected elements are ·limited to Li, Mg, Ca, Al, Cu, Fe, Zn, Pb, Ag, C, N, O, S, Cl. ·Properties are physical and chemical. ·Physical properties may include melting and boiling points (state), colour, lustre, hardness, ductility and malleability, electrical and thermal conductivity, density. ·Chemical properties may include reaction with oxygen. For metals, properties may include reactions with water and acids (HCl, H2SO4).
Properties include ·Physical properties - may include melting point, colour, lustre, hardness, ductility and malleability, electrical and thermal conductivity, density. ·Chemical properties - may include reaction with oxygen, water and acids (HCl, H2SO4).
Demonstrate understanding involves describing, identifying, naming, drawing, giving an account of, defining aspects of elements. This requires the use of chemistry vocabulary, symbols and conventions including names, formulae and completing word equations.
Demonstrate detailed understanding requires making and explaining links between aspects of elements. This requires explanations that use chemistry vocabulary, symbols and conventions including names, formulae and writing word equations or completing given symbol equations.
Demonstrate comprehensive understanding will typically involve elaborating, justifying, relating, evaluating, comparing and contrasting, or analysing links between aspects of elements. This requires the consistent use of chemistry vocabulary, symbols and conventions including writing balanced symbol equations.
Investigate will involve carrying out gathering primary data, making and recording experimental observations, and may include describing, gathering, processing, interpreting, identifying, classifying and giving an account of the physical and chemical properties of metals and the implications of their use in society. This requires the use of chemistry vocabulary, symbols and conventions including names, formulae and writing word equations.
Investigate in detail requires making links between the properties of metals and the implications of their use in society including the reactivity of metals with oxygen, water and / or acid. This requires explanations that use chemistry vocabulary, symbols and conventions including names, formulae and completing symbol equations.
Investigate comprehensively typically involves elaborating, justifying, relating, evaluating, comparing and contrasting, or analysing the links between the chemical and physical properties of metals and the implications of their use in society. This
requires explanations that consistently use chemistry vocabulary, symbols and
conventions including writing balanced symbol equations.
· atomic structure and the organisation of the periodic table (a periodic table will be provided)
– electron configuration (limited to the first 20 elements)
– trend down a group (similarity of reaction, reactivity)
– trend across a period (position of metals and non–metals).
· properties of metals, their reactivity and uses:
– activity series
– alloys.
· properties and uses of non–metals and selected compounds:
– sulfur, aqueous chlorine, allotropes of carbon and oxygen (ozone)
– selected compounds include sulfuric acid, ammonia.
· limited to Li, Mg, Ca, Al, Cu, Fe, Zn, Pb, Ag, C, N, O, S, Cl.
· Properties are physical and chemical.
· Physical properties may include melting and boiling points (state), colour, lustre, hardness, ductility and malleability, electrical and thermal conductivity, density.
· Chemical properties may include reaction with oxygen. For metals, properties may include reactions with water and acids (HCl, H2SO4).
· Physical properties - may include melting point, colour, lustre, hardness, ductility and malleability, electrical and thermal conductivity, density.
· Chemical properties - may include reaction with oxygen, water and acids (HCl, H2SO4).