This achievement standard involves investigating and classifying chemical reactions by carrying out observations and using equations.
Achieved |
Merit |
Excellence |
Investigate selected chemical reactions. |
Investigate, in depth, selected chemical reactions. |
Investigate, comprehensively, selected chemical reactions. |
Investigate involves carrying out a range of chemical reactions and recording observations and classifying reactions. It also typically involves describing, gathering, processing, interpreting, identifying, and giving an account of selected chemical reactions and using solubility rules to determine solubility. This requires the use of chemistry vocabulary, symbols and conventions (including names and formulae), and writing word equations. |
Investigate, in depth, involves classifying chemical reactions from experimental observations and/or equations and predicting the formation of a precipitate using solubility rules. It requires explanations that use chemistry vocabulary, symbols and conventions (including names and formulae), and completing symbol equations. |
Investigate, comprehensively, typically involves explaining, elaborating, justifying, relating, evaluating, comparing and contrasting, or analysing the links between the classification of reactions, observations and equations, and the formation of precipitates and solubility rules. This requires explanations that use chemistry vocabulary, symbols and conventions (including names and formulae), including writing balanced symbol equations. |