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20 questions
A _______ is a mixture of two or more different substances.
Element
Mixture
Compound
Pure substance
______ allows insoluble solids to settle to the bottom of the container before the liquid is carefully poured off the top.
Filtration
Precipitation
Decantation
Handpicking
________ separates the insoluble solids from a liquid in a mixture using a filter.
Decantation
Sifting
Magnet attraction
Filtration
________ separates the solid substances that have noticeable differences in sizes, shapes or colors.
Sifting
Handpicking
Precipitation
Decantation
_________ separates solids of different sizes.
Handpicking
Evaporation
Sifting
Decantation
What separation technique should we use to separate sand from dirty water?
Magnet attraction
Handpicking
Filtration
Centrifugation
How to separate a mixture of different nuts and beans?
Sifting
Handpicking
Decantation
Evaporation
Mina poured out the water from a bowl with a mixture of water and rice grains. What technique did she use?
Handpicking
Filtration
Decantation
Precipitation
Pooh separated the pebbles from the mixture of sand and pebbles using a sieve. What technique did he use?
Sifting
Sieving
Both sieving and sifting are correct
None of the choices
Ploy is planning to separate the mixture of flour and iron filings. What must she use?
Wood
Magnet
Metal
Water
Which of the following mixture will be used for the evaporation separation technique?
Beans and cereals
Flour and pepper corns
Iron filings and sand
Water and salt
What must Athens use to separate the mixture of flour and peppercorns?
Filter paper
Sieve
Water
Funnel
Sifting is a technique used to separate solids of different sizes?
Answer: Yes or No
Handpicking can be used to separate a mixture of oil and water.
Answer: Yes or No
What are the mixtures needed if we use a decantation technique?
Sand and flour
Tea and tea leaves
Sand and shells
Mixture of fruit salad
What are the mixtures needed if we use the precipitation technique?
Metal paper clips and magnet
Mixtures of different gases
Dirty water with alum
Flour and water with filter paper
What mixtures we must use if we use the magnet attraction separation technique?
Iron filings and flour
Magnet and metal paper clips
Magnet and pins
All of the above
Can we use decantation if we want to separate a mixture of flour and red beans?
Answer: Yes or No
Can we use handpicking to separate tomatoes from the salad?
Answer: Yes or No
Can we consider air as a mixture?
Answer: Yes or No
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