Question

question 8
determine the separation techniques youd need to use to separate a mixture of styrofoam beads, sand, and magnesium sulfate solution give the information in the table below. explain each of your choices.

reflection

question 9
the connect, extend, challenge routine helps you to make connections between your new and old ideas. identifying what still challenges you will suggest the next steps for extending your understanding. reflect on how your thinking has changed during this lesson. connect what youve learned to what you already knew and identify what you still find challenging.

Explanation:

Step1: Separate styrofoam beads

Since styrofoam beads are less - dense than water and insoluble, we can use the decantation method. Pour the mixture into water, and the styrofoam beads will float to the surface and can be skimmed off.

Step2: Separate sand

Sand is insoluble in water. After removing the styrofoam beads, we can use filtration. Pour the remaining mixture through a filter paper. The sand will be retained on the filter paper while the water - magnesium sulfate solution passes through.

Step3: Separate magnesium sulfate

Magnesium sulfate is soluble in water. We can use evaporation. Heat the magnesium sulfate solution until the water evaporates, leaving behind the solid magnesium sulfate.

Answer:

	Step 1: Styrofoam beads	Step 2: Sand	Step 3: Magnesium sulfate
Explanation	Floats on water due to low density, can be skimmed off	Insoluble in water, retained by filter paper	Soluble in water, water can be evaporated off