S6 Chem (5) Other separation techniques

Which of the following is not a scenario where we would want to use magnetic separation?

• In a scrap yard to find metals

• Removing contaminants from metal recycling

• In mining to find iron in crushed materials

• Separating plastic from glass recycling

What does the process of chromatography rely on?

• Density difference

• Electric charge difference

• State difference

• Movement speed through a material

What is NOT an advantage of using evaportation to separate salt from water?

• We can use renewable energy from the sun

• A large amount can be done at once

• It needs a small area of land

• We do not need complex machines

Which state would you expect a precipitate to be in?

• A solid

• A liquid

• A gas

When a solid is dissolved in liquid, the resulting mixture can be described as a

• Solution

• Solvent

• Pure substance

• Chroma

If you go to a store and see a product labeled "distilled water", what does it mean?

• A pure substance of only water molecules

• A homogeneous mixture of water molecules

• Water that is ideal for drinking

• Water that contains many ions

Which of the following separation techniques is often the result of a chemical reaction?

• Precipitation

• Evaporation

• Chromatography

• Magnetic

What is an ion?

• A charged atom

• An atom with a high density

• An atom that is part of a precipitate

• An atom in a solution

What type of material will be strongly attracted to a magnet?

• Diamagnetic

• Paramagnetic

• Ferromagnetic

• Non-magnetic

True or False: All metals are strongly attracted to magnets

• TRUE

• FALSE