Bell Work-Sept 29

All metal objects are magnetic.

• True

• False

All magnets have _____ poles.

• 1

• 2

• 3

• 4

Choose the magnetic materials

• plastic and iron

• steel and iron

• paper and cloth

• wood and silver

Which mixture can be separated using a paper filter?

• sand and iron filings

• saltwater

• sand and water

• none of the above

If I added 27 grams of salt to water and separated the solution with a hot plate (heating it up and evaporating the liquid), what amount of salt would be left behind?

• 20 grams

• 0 grams

• 27 grams

• 10 grams

I have a mixture of Wood chips, sand, iron filings, and gravel. Here is a way to separate them:

1. Use a sieve to separate the the sand and iron filings from the gravel and wood chips.

What would be step 2?

• Use the sieve again to separate the iron filings and the sand

• Use a magnet to separate the iron filings from the sand

• Use a tweezers to pick out the iron filings

• use a filter and water to separate the sand from the iron filings

Which set of procedures would be best to follow when separating a mixture of sand, salt, and water?

• 1. Evaporate the liquid to separate water
  2. heat solid mixture to separate salt
• 1. pour mixture through filter to separate sand
  2. evaporate liquid to separate salt
• 1. pour mixture into bowl to separate water
  2. use hand lens to separate sand
• 1. heat mixture on hotplate to separate sand\
  2. cool liquid to separate sand

A cup is filled with a mixture of water and gravel. Which method listed below could NOT be used to separate this mixture?

• Allow the water to evaporate

• Pour the mixture through a paper filter

• Pour the mixture through a wire strainer

• Run a magnet through the mixture

Which physical property of salt would stay the same in a mixture of salt particles and water?

• color

• shape

• size

• taste

What mixture could you use this tool to best separate that mixture?

• Sugar and Salt

• Sand and rocks

• Apples and grapes

• Shampoo and water