Separating Mixtures and Solutions

What was the tool he used to separate the mixture at the beginning?

• strainer

• bowl

• fingers

This method of separation is also called ___________.

• flotation

• filtration

• sifting

• magnetism

Why can't they use a sieve/strainer to separate the iron from the sand?

• particle(shape) sizes are similar (won't separate pieces)

• they can use a strainer

Why does a magnet work as a tool to separate this mixture?

• The sand is attracted to the magnet while the iron filings are not.

• The iron filings are attracted to the magnet while the sand is not.

• The iron filings are heavier than the sand, so the magnet can pick them up.

What physical property did he use to separate the cork and sand?

• size and shape (strainer)

• conductor/insulator

• sink or float (density)

Where did the sand collect when the mixture was poured?

• in the flask

• the water

• in the filter

What is another name for this type of separation technique?

• flotation

• filtration

• magnetism

• sifting

When the water is evaporated, what is left in the pan?

• some ice

• all the water

• every last bit of salt they started with

What happens to salt when you mix with water?

• floats 

• dissolves

What was separated from the mixture first? Completely taken away from the mixture.

• salt

• pepper

• water