Mixture

Objective

¡Students will examine mixtures of objects, in order to explore ways to classify and separate mixtures

Engage/Explore: 

The Great Picnic crash course

https://www.youtube.com/watch?v=jA0PzblYPUM

Explain:

¡Homogeneous Mixture

    §Substance are so even mixed that you cant see the different parts

         ▪Examples: solutions, gases

Checking for understanding question

What properties are used to separate mixture

    Physical properties

Is a mixture a substance? Explain

    No, a mixture is made of two or more substance that are physically blended but not chemically combined

¡Heterogeneous Mixture

§You can usually see the different parts

§Can be easily separated.

▪Example: salad

Elaborate:

¡Building inquiry

§Getting the iron out

Pour cereal in the bag and seal it

Crush until a fine powder

Pour in a bowl, add just enough water to cover the cereal

Stir with a magnet for about 10 minutes

Remove the magnet-drain

Remove particles with white tissue. What do you see?

Complete the worksheets

Evaluate:

¡What are the two types of mixtures?

¡How can we separate mixtures?