Learning objects Chemical reactions: reaction reshuffles

TLF ID L2573

Investigate chemical reactions at a molecular level. Examine collisions between molecules of two reactants. Adjust the ratios of the reactants and compare the outcomes. Identify the number of molecules involved in a balanced reaction. For example, two A molecules combine with a B2 molecule to form a molecule of A2B2. This learning object is one in a series of six objects. The series is also packaged as a combined learning object.



Educational details

Key learning objectives
  • Students interpret chemical equations at a molecular level.
  • Students balance chemical equations.
  • Students relate balancing equations to the conservation of atoms in chemical reactions.
  • Students explain chemical reactions in terms of the collision theory.
  • Students relate energy flow in chemical reactions to the making and breaking of chemical bonds.
Educational value
  • Demonstrates the conservation of atoms and energy in chemical reactions and relates this to balancing equations.
  • Simulates molecular collisions resulting in chemical reactions.
  • Enables students to dissemble reactant molecules and reassemble the atoms into product molecules.
  • Provides a tool to track and adjust the relative numbers of reactant molecules and product molecules.
  • Provides opportunities to balance a range of chemical equations.
  • Shows that energy input is required to break bonds and energy is released when bonds are made.
  • Relates the overall energy of a chemical reaction to the individual bond energies.
Year level

9; 10

Learning area
  • science
Strand
  • Science/Science understanding
    Concept
    • Science/Chemical bonds
    • Science/Atoms
    • Science/Models
    • Science/Molecules
    Skill
    • Knowledge;
    • Comprehension;
    • Application;
    • Analysis
    Student activity
    • Interactives;
    • Experiment;
    • Analysis;
    • Modelling
    Learning design
    • Experiential learning;
    • Independent learning;
    • Problem solving;
    • Visual learning

    Other details

    Contributors
    • Script writer
    • Name: Erica Dale
    • Organisation: Tungaroo Software
    • Address: Manly NSW 2095 Australia
    • Subject matter expert
    • Name: Graham Coghill
    • Address: Marcus Beach QLD 4573 Australia
    • Educational validator
    • Name: Denis Goodrum
    • Organisation: Australian National University
    • Address: Canberra ACT 0200 Australia
    • URL: http://www.anu.edu.au/
    • Technical implementer
    • Publisher
    • Date of contribution: 28 Jan 2014
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL: http://www.esa.edu.au
    Access profile
    • Colour independence
    • Device independence
    • Hearing independence
    Learning resource type
    • Interactive Resource
    Browsers
    • Microsoft Internet Explorer - minimum version: 8.0 (MS-Windows) - maximum version: 9.0 (MS-Windows)
    • Firefox - minimum version: (MS-Windows)
    • Safari - minimum version: 5.1 (MacOS)
    Operating systems
    • MacOS - minimum version: 10.6
    • MS-Windows - minimum version: XP - maximum version: 7
    Rights
    • © Education Services Australia Ltd, 2013, except where indicated under Acknowledgements.