Dissolving, Sediments and Reactions!

Primary 7 are studying ‘Reversible and Irreversible Changes’. We have investigated mixing materials with water to find out which dissolve, which create a sediment or react to make a new material. When something dissolves it disappears in the water. A sediment is formed when the material sinks to the bottom or floats to the top and finally if there is a reaction between the water and the material it makes something new that can’t be changed back to what you started with. image image image image image image image image image image image image