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Separation Techniques in Occupations

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  • Which job uses chromatography to test for banned substances
    Drug tester
  • Why is filtration not useful for saltwater
    Salt is dissolved
  • What is the process of removing salt from seawater
    Desalination
  • What do you call a solution with only a small amount of solute
    Dilute
  • What does every scientific purpose/aim begin with?
    To determine
  • Why is density useful in separation
    Objects with different densities can be separated
  • What do you call the clear liquid that passes through filter paper
    Filtrate
  • Why is salt used on icy roads
    It lowers the freezing point of water
  • What did John Snow’s discovery lead to
    Improvements in public health
  • Why is John Snow known as the father of modern epidemiology
    He used evidence to stop disease spread
  • In saltwater, what is the solute
    Salt
  • What method can purify muddy water
    Filtration
  • Why is water important in making solutions
    It helps dissolve substances
  • Why was John Snow’s work important
    It showed water could spread disease
  • What technique uses filter paper to trap solid particles
    Filtration
  • What is formed when a solute dissolves in a solvent
    Solution
  • What does condensation form on a cold window
    Water droplets
  • What system is now used to stop sewage from mixing with drinking water
    Sewage treatment
  • What property of oil makes it float on water
    Low density
  • What is a real-life example of evaporation
    Clothes drying
  • What is the best way to separate a mixture of iron and sand
    Magnetism
  • How did John Snow prove the pump was causing illness
    Mapped cases around it
  • What is the purpose of a sewage system
    To safely remove and treat waste water
  • What can you see in a suspension but not in a solution
    Particles
  • How does density affect whether something floats or sinks
    Lower density floats
  • Why is water called the universal solvent
    It dissolves many substances
  • What happens to water in the water cycle when it cools down
    It condenses
  • Which separation method is used in mining to wash away dirt
    Panning
  • What remains on the filter paper during filtration
    Residue
  • What is a solution with a lot of solute called
    Concentrated
  • How did John Snow’s map help solve the cholera mystery
    It showed a pattern of cases near a pump
  • Why do scientists use chromatography in forensics
    To compare substances
  • What separation method is used to separate dyes in ink
    Chromatography
  • Why do some dyes travel further in chromatography
    They are more soluble
  • Which state of matter has particles that are spread far apart
    Gas
  • What tool is needed for chromatography
    Filter paper
  • In saltwater, what is the solvent
    Water
  • What do modern sewage treatment plants remove
    Waste, bacteria, and harmful chemicals
  • What is one lesson learned from John Snow’s work
    Safe water prevents illness
  • What can happen if sewage leaks into water supplies
    People can get sick
  • What is the best way to separate sugar from water
    Evaporation
  • How does sewage treatment prevent disease
    Removes harmful germs from waste
  • What is a mixture called where particles are visible and may settle over time
    Suspension
  • What street was the water pump that John Snow identified as dangerous
    Broad Street
  • What did people originally believe caused cholera
    Bad air
  • How did the government respond after Snow’s findings
    Improved water and sewer systems
  • Who was the doctor who mapped cholera cases in London
    John Snow
  • What method did John Snow use to track the cholera outbreak
    Mapping
  • What technique separates sand from water
    Filtration
  • What is it called when water changes from liquid to gas
    Evaporation
  • Why is clean drinking water important
    To prevent the spread of disease
  • What state of matter is oxygen
    Gas
  • What state of matter is a solvent usually in
    Liquid
  • What happens if you keep adding solute to a solvent and it no longer dissolves
    It becomes saturated
  • What does every scientific purpose/aim begin with?
    To determine
  • What disease did John Snow investigate in 1854
    Cholera
  • Which part of chromatography shows how far a substance travels
    Chromatogram
  • Which process separates substances based on how far they travel on paper
    Chromatography
  • What technique is used to separate stones from rice
    Sieving
  • What did John Snow believe was spreading cholera
    Contaminated water
  • What do you call the substance that dissolves another substance
    Solvent
  • Which property helps filtration separate mixtures
    Particle size
  • Why does sand not dissolve in water
    It is insoluble
  • What does a barista use to separate coffee grounds from liquid coffee
    Filtration
  • Which occupation uses sieving to separate rocks from soil
    Farmer
  • What item did John Snow remove to stop the outbreak
    Water pump handle
  • Which has a higher density, metal or plastic
    Metal
  • Which part of a solution is usually a liquid
    Solvent
  • What happens when sugar is mixed into tea
    It dissolves
  • What is the name of the substance that dissolves in a solvent
    Solute
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