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30 questions
The substances in a mixture always change when they are mixed together.
True
False
Which of these is a solid?
Salt
Water
Steam
What is sieving?
Evaporating a mixture
Separating solids based on their size
What is the name of this instrument?
Sieve
Filter
Dish
Which of the following describes what happens to rice when mixed with corn?
The corn is completely mixed with rice
The corn is at the bottom of the bowl
It can be easily identified from one another
it CANNOT be easily identified from one another
To separate a mixture of salt and water what separation tool/method is used?
Filter
Sieve
Magnet
Evaporation
If you spilled nails in a sandbox, what separation tool/method could you use to clean out the sandbox so it would be safe for children to play in?
Filter
Screen
Magnet
Evaporation
This type of paper allows liquid to pass through it. What tool is it?
sieve
filter
A solution of salt and water was put over heat. What will happen next?
The salt will evaporate
The salt and water evaporate
The water will evaporate
Which of these materials are attracted to a magnet?
iron filings
sand
rocks
wood
If I pour sand and water onto a filter, what will happen?
Water and sand will go through the filter
Sand will get caught in the filter, water will pass through
Both sand and water will get caught in the filter
If I have a mixture of peanuts and nails, which would be the BEST tool to separate them?
filter
magnet
sieve
by hand
Name the separation technique shown in the diagram.
evaporation
distillation
filtration
This method is utilized in industries like junkyards to remove metal scraps from other materials.
chromatography
physical manipulation
use of magnet
distillation
What mixture could you use this tool to best separate that mixture?
Sugar and Salt
Sand and rocks
Apples and grapes
The science teacher accidentally combined metal shavings with sand, what method can be used to separate the mixture?
If you had a mixture of rocks and sand and needed to separate them what method would work best?
You have a glass of salt and water, what is the best method to separate the salt out of the water?
True or False: A mixture must have at least two different materials.
True
False
True or False: You can use your hands or tweezers to separate salt from water.
True
False
True or False: If you combine metal shavings with sand, there is NO way you can separate them.
True
False
If a solid disappears when added to a liquid (like when sugar is stirred in water), it means that solid has ____________.
Formed a solute
Dissolved
Formed a solvent
Become insoluble
A liquid mixture in which the solute is evenly distributed.
Solvent
Acid
Solution
Base
If a spoonful of sugar is mixed in a glass of water, what is the water called?
Solute
Solution
Solvent
Element
Which of the following mixtures can be separated by filtration
How can we remove the tomato seed from the mixture to make the tomato soup smoother?
Decantation
Filtration
Distillation
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