How can a scientist safely tell whether an unknown solution is salt in water or sugar in water?
  • taste the solution
  • smell the solution
  • test the electrical conductivity of the solution
  • filter the solution
If two unidentified solids of the same texture and color have different solubility in 100 grams of water at 20C, you can conclude that...
  • They are the same
  • They are different
  • They have different melting points
  • The solubility will be the same if the water temperature is increased.
When a solid compound dissolves in water, …
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  • each of its particles are surrounded by water molecules.
  • its particles surround individual water molecules.
What does it mean if a compound has a solubility of 15g in 100g of water at 0C?
  • 100g of the compound will dissolve in 15g of water at 0C.
  • 15g of the compound will dissolve in 100g of water at 0C.
  • The compound will not dissolve until 15g of it are present.
  • The compound will dissolve only if the water temperature is 0C.
Table sugar and table salt are examples of ...
  • atoms
  • elements
  • mixtures
  • compounds
Substances that cannot be broken down chemically into other substances are...
  • elements
  • compounds
  • mixtures
  • solutions
All elements are composed of extremely small particles called..
  • compounds
  • mixtures
  • atoms
  • molecules
Which of these statements is false?
  • Oxygen and copper are examples of elements.
  • Elements are pure substances.
  • Atoms of different elements can combine to form compounds.
  • Atoms of different elements are the same.
Weak tea is an example of a...
  • dilute solution
  • concentrated solution
  • suspension
  • solvent
When you add so much solute that no more dissolves, you have a
  • saturated solution
  • unsaturated solution
  • neutralization
  • suspension
You know that a substance has dissolved when it-
  • becomes a solid
  • produces condensation and has water droplets 
  • spreads evenly throughout a liquid
As a whole, this bowl of chicken noodle soup would generally be considered a
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  • mixture
  • solution
A cup of coffee would be considered a 
  • mixture
  • solution
Which of the following is NOT a mixture?
  • oxygen
  • coins in a piggy bank
  • bird seed
  • Chex mix
Salt can be separated from water by using
  • tweezers
  • sieve
  • magnet
  • evaporation
Salt and pepper would be an example of a
  • mixture
  • solution
If you pour sugar into hot water the sugar will
  • disappear
  • evaporate
  • dissolve
  • expand
All of the buttons in this pile
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  • make the pile a mixture.
  • can be separated with a magnet.
  • have all the same properties.
  • are likely to dissolve in water.
Which of the following would be considered a mixture? 
  • lemonade
  • sweet tea
  • trail mix
A salad would be considered a _____________. 
  • mixture
  • solution
This is an example of a
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  • Solution
  • Mixture
This is an example of a
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  • Solution
  • Mixture
This is a type of mixture where one substance dissolves into another
  • Solution
  • Miscibility
  • Compound
  • Solubility
Combination of two or more different kinds of substances that keep their own physical properties and can be easily separated.
  • Solution
  • Mixture
  • Solubility
  • Miscibility
Sugar dissolved in water is an example of a
  • Solution
  • Mixture
A saturated solution is______
  • No more solute can be dissolved
  • More solute can be dissolved
  • The solvent and solution
__________ are made up of solutes and solvents.
  • Solutions
  • Suspension
  • Colloid
  • mixtures
Amount of solute in a given amount of solvent or solution
  • Concentration
  • Miscible
  • Solute
  • solubility
Substance dissolved in a solution
  • concentration
  • solute
  • solvent
  • solution
Capable of being dissolved
  • Soluble
  • concentration
  • colloid
  • molarity
Which of the following is most likely the reason why the scientists stirred the solution at a high rate of speed?
  • Stirring allows solvent to be dissovled
  • Stirring allows solute to do the dissolving
  • Stirring allows the solution to be unsaturated
  • Stirring allows the solute to be more easily dissolved
In sweet tea the solvent would be
  • water
  • tea
  • sugar
  • lemon
When a certain amount of solvent cannot hold any more solute it is called a ________ solution.
  • Diluted
  • Saturated
When a solution is saturated:
  • No additional material will dissolve in it
  • You need to stir it more 
  • Two materials have combined to create a clear liquid
  • Crystals form 
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