Mixtures And Solutions Question Preview (ID: 37068)


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Vegetable oil, water, and salt are added to a jar and stirred. The ingredients that maintain their own physical properties when mixed include-
a) A, Water and salt
b) B. Vegetable oil and salt
c) C. Vegetable oil and water
d) D. Vegetable oil, water and salt

Salt and pepper maintain their physical properties when mixed.
a) True
b) False
c)
d)

Salt and water maintain their physical properties when mixed.
a) True
b) False
c)
d)

Jack fills a jar with nuts, bolts, marbles, salt, sand, pebbles and sawdust. He adds water and shakes the jar. Jack notices that all of the ingredients keep their own physical properties except-
a) marbles
b) sawdust
c) salt
d) sand

A student has a mixture of marbles, rocks, gravel and salt. Which tool would help the student separate the individual substances by size?
a) a magnet
b) a sieve
c) a filter
d) evaporation

Graphite is a greyish-black substance used in pencils. The substance is similar in color and size to iron fillings. The physical properties of iron filings do not change when mixed with graphite. How could iron filings be separated from a mixture
a) Use a magnet to attract the iron fillings out of the mixture
b) Use a sieve to sort the iron filings from the graphite
c) Add oil to the mixture to separate the iron filings from the mixture
d) Add water to the mixture to separate the iron filings from the mixture

What happens to the physical properties of garlic salt when you add it to soup?
a) the physical properties change
b) the physical properties stay the same
c) the physical properties increase
d) the physical properties double

Two teaspoons of salt are mixed with water and the particles are spread very evenly. What is this mixture called?
a) Recipe
b) Solution
c) Blend
d) Chemical

A student had a mixture of popsicle sticks that float and pennies that sink. What is tool used to separate this mixture without touching the materials?
a) Sieve
b) Evaporation
c) Flotation
d) Filter

What is the best (easiest) way to separate sand from water?
a) a. Use a magnet to pull out the sand
b) b. Boil the mixture and let the water evaporate
c) c. Use a filter to catch the sand
d) d. Scoop the sand with a spoon

Which of the following is the BEST example of a mixture in which all the ingredients keep their original properties?
a) salt mixed with sugar
b) sugar dissolved in water
c) coffee grinds boiled with water
d) food coloring mixed in water

What tool would you use to separate sand, rocks, and iron filings?
a) filter paper and magnifying glass
b) sieve and magnet
c) magnet and filter paper
d) sieve and magnifying glass

Which of the following is a mixture?
a) birthday cake
b) salad
c) lemonade
d) salt water

13. Sand and salt are placed in the bottom of a beaker filled with water. The beaker is heated, and the water is stirred. What will happen to the salt and sand?
a) a. The sand and salt will settle to the bottom.
b) b. The sand and salt will dissolve in the water.
c) c. The salt will dissolve, and the sand will settle.
d) d. The sand will evaporate, and the salt will dissolve.

What do you call a solid that dissolves in liquid?
a) Dense
b) Insoluble
c) Soluble
d) Volume

A student adds 10 grams of 4 different powdered solids into 4 different beakers. The student then adds 100 mL of water to each beaker, stirs the mixtures, and allows them to sit before recording observations. What question is she trying to answer?
a) At what temperature do the substances dissolve?
b) How much water is needed to cause a substance to change state?
c) What causes a substance to sink when put in water?
d) Which substances dissolve in water?

Some people add sugar to their hot tea. Which property of the sugar remains the same when the sugar is in the tea solution?
a) The taste of the sugar
b) The size of the sugar crystals
c) The color of the sugar
d) The texture of the sugar

A student made a mixture using equal amounts of salt and pepper. The salt grains were the same size as the pepper grains. What should the student do to most easily separate the pepper from the salt?
a) Use a pair of tweezers to remove each grain of pepper
b) Run a small magnet through the mixture to attract the pepper
c) Put the mixture in water and filter the pepper out the water
d) Use a strainer with a fine wire screen to remove the pepper

When a powdered drink mix was added to water, the liquid turned orange. A student decided the taste was too strong, so he poured out half of the liquid and added more water. Which of the following most likely occurred when more water was added?
a) The physical state changed
b) The orange color became lighter
c) The liquid had a sweeter taste
d) None of the above

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