Oxidation sensation

Science Year 5
This unit is part of Year 5 Science Changing Materials

Objectives

Some changes in materials can’t be reversed and they can produce new materials in the process. Immerse yourself in the world of oxidisation and observe how rust is formed and how apples spoil when cut open – can you prolong your apple’s shelf life or is it all looking brown?

Science Objectives
i) Explain that some changes result in the formation of new materials, and that this kind of change is not usually reversible, including changes associated with burning and the action of acid on bicarbonate of soda.

Working Scientifically

  1. Plan different types of scientific enquiries to answer questions, including recognising and controlling variables where necessary.
  2. Record data and results of increasing complexity using scientific diagrams and labels, and tables.
  3. Report and present findings from enquiries, including conclusions, causal relationships and explanations of and degree of trust in results, in oral and written forms such as displays and other presentations.

Other Curriculum Areas
Computing

  • Understand the opportunities that the www offers for communication and collaboration. Select, use and combine software (including internet services) to design and create content.

You Will Need

Provided Resources

  • Investigation guidance/enquiry questions
  • Observation/recording tables (for less able)

Additional Resources

  • An old, rusty roasting tray (or image provided)
  • Range of liquids and nail types (see tables)
  • Apples
  • Lemon juice
  • Salt
  • Sugar
  • Vitamin C tablets
  • Access to the Internet/photographic equipment.

Weblinks
Changing materials: rust from www.bbc.co.uk
What is rust? from www.bbc.co.uk

Lesson Planning

Teaching

  • Plan and carry out oxidation investigations.
  • Observe and record oxidation reactions over time.

Activities

  1. Plan and carry out investigations into the impact of certain ingredients on an end product.
  2. Record observations through photographs.
  3. Create a whole class investigation webpage with photo observations and pin it to a Pinterest board.

Vocabulary
Opinion/fact, variables, accuracy, precision, scatter graphs, material names, property names, enquiry