Science Unit 6D: Reversible and irreversible changes

Online resources to support teaching and learning

Teaching and Learning Resources Website

• Mixing materials with water - mixing materials can cause them to change
• Mixing materials with liquids - mixing materials can cause them to change
• Filtration and evaporation 1 - insoluble materials can be separated by filtering and solids which have dissolved can be recovered by evaporating the liquid from the solution. Cloze procedure.
• Filtration and evaporation 2 - as above. Yes/No quiz.
• Making new materials - some changes that occur when materials are mixed cannot easily be reversed; heating and cooling some materials can cause them to change
• Heating and cooling materials - heating and cooling some materials can cause them to change
• Burning and hazards of burning - when materials are burned, new materials are formed; changes that occur when most materials are burned are not reversible

Websites for Pupils (each link will open in a new window)

• BBC - Schools Science Clips Reversible and irreversible changes
  A virtual laboratory in which children aged 10-11 can investigate which changes
  are reversible and which are irreversible.
• BBC Schools Quiz Reversible and irreversible changes
  A quiz to test your over-all knowledge and understanding of the unit.
• BBC Revisewise:
  Changing materials - Activity, Worksheet, Factsheet and Quiz
  Separating materials - Activity, Worksheet, Factsheet and Quiz

Websites for Teachers (each link will open in a new window)

• BBC - Schools Science Clips - Reversible and irreversible changes
  An offline lesson plan to accompany the Reversible and irreversible changes
  activity from the Science Clips website. Also available: worksheet to print and complete, online lesson plan.
• [PDF] Baking
  File Format: PDF/Adobe Acrobat
  Ask pupils to identify reversible and irreversible changes taking place in the Making bread activity.
• [PDF] Irreversible Changes PDF
  File Format: PDF/Adobe Acrobat - fact and activity sheet.
• Michael Faraday's Candles This interactive whiteboard activity is based on one of Michael Faraday's experiments and will enable pupils to observe what changes take place when a candle is lit and then placed inside flasks of different volume. Through observing and then measuring changes, they will understand how a solid (candle wax) changes to a liquid and then a gas. Lesson pack also available for download.