CHAPTER 3 – MECHANICAL MIXTURES. Grade 7 Science Presented on: February 17, 2011. Minds On. Compounds. 3.2 – Separating Mechanical Mixtures. SORTING. EXAMPLES. Pizza Salad Laundry. DEFINITION.
Grade 7 Science
Presented on: February 17, 2011
Melted chicken fat
Waste water treatment
Scrap Metal Yard
Pasta in Water using a colander
A device that is used to separate solids from liquids
This device has many small holes that trap solid pieces of a mixture but allow liquids and gases to pass through.
Pepper in Water
You will be working in groups – each group will have a letter
Each group will get two cups, salt/pepper mixture, filter paper
Each group member will have a role – number yourselves 1 to 4.
Group Member One: Will go to the side and grab one cup with their group letter which has 50mL of water.
Students will grab a small cup with salt/pepper mixture
Group Member Two: Will mix the mixture and the water using a popsicle stick
Group will work together to try and separate the mixture.