This week Year 5 have been investigating the properties and changes to materials.
Day 1: Reversible and Irreversible Changes
We have been testing both reversible and irreversible changes. Our first challenge was to see what happened when the following substances were combined:
Vinegar and bicarbonate of soda,
Lemon juice and bicarbonate of soda,
Washing powder and lemon juice,
Vitamin C tablets and water
Day 2: Filtering
Today we have been learning all about how to separate solids and liquids through the process of filtering. As part of our investigation we chose three different materials to experiment making filters out of.
The materials we tested included:
The class enjoyed trying to filter the muddy water to produce something that resembled clean water. We discussed the fact that the mud was insoluble due to the fact that it did not dissolve in the water. On day three, we planned to look at soluble materials and how they dissolve in liquids.
Day 3: A Muddy Mess
We continued to explore and investigate separating materials on a much larger scale. We were given the challenge of separating these insoluble materials and returning them to their original state: mud, water, paper clips, chick peas, pasta, rice and stones. Both classes had the following equipment to choose from: sieve, funnel, magnets, beakers, filter materials, cups and trays. We had to write our own instructions to follow before getting very messy hands.