Science in Year 5 : How Might Mixtures be Separated?

Separating mixtures

We use sieves to separate things.  A sieve has holes of a certain size. You can use sieves to separate two substances with different sized bits or particles.  As long as you choose the right sieve, one substance will go through the holes and one will not.

We had a mixture of flour, rice and pasta. 

We separated the flour, rice and pasta using different sized sieves.

We used a magnet to separate the plastic counters and metal paperclips.