P6/7 have been carrying out science experiments this week, looking at changing state of materials.
We did some dissolving experiments and had to predict which materials would dissolve and which wouldn’t.
We learned that some substances dissolve when you mix them with water. When a substance dissolves, it looks like it disappears, but in fact, it has just mixed with the water to make a transparent (see-through) liquid called a solution.
When you mix sugar with water, the sugar dissolves to make a transparent solution. Salt dissolves in water too. We learned that sand doesn’t dissolve.
We also discussed how ice can change to water and steam and how some materials can change back to their original state.
We also looked at the structure of the Earth. We made models to show the crust, the mantle, outer core and the inner core. We also learned that we can use an apple or a boiled egg to represent these.
