vocabulary
vocabulary 2
focus questions
ratios
random
100
a pure material that is not a mixture
What is a substance
100
the same amount
What is equal volume
100
Is there a limit to the amount of salt that will dissolve in 50 ml of water
What is yes
100
pairs of numbers that are used to compare 2 quantities
what is a ratio
100
The marble on the bottom of the cup of water is evidence that
the marble is more dense than the water
200
when a solvent cannot dissolve anymore solutes
What is saturated
200
density
What is mass per unit volume
200
does it always take the same amount of solid material to saturate 50 ml of water
no
200
A student has 2 solutions. The first solution has 50ml of water and 3 tsp. of salt. In the second solution the student has 150 ml of water and 9 tsp of salt. Which one is more concentrated?
The concentration is equal.
200
A student notices that the oil in her salad dressing floats on top of the vinegar. The oil floats on top of the vinegar because
the oil is less dense than the vinegar
300
is the property that substances have dissolving in solvents
What is solubility
300
dilute
What is a solution containing little solute or low ratio of solid material to liquid
300
can you identify the mystery substance by its properties
it depends on the substance because sometimes they can look or smell the same
300
Chemists monitor the materials dissolved in drinking water very carefully. The write a report each year, explaining which and how much of each solid is dissolved in the water. These scientist are reporting about
What is concentration
400
incapable of being dissolved
What is insoluble
400
concentration
What is the ratio of a solute to solvent in a solution
400
what happens when put salt in water
What is dissolving
400
Three students make solutions. They all use the same amount of solid. Student X uses 1000 ml of water Student Y uses 500 ml of water Student Z uses 750 ml of water Which solution is most concentrated?
Who is student Y
500
solute dissolves in solvent until no more will dissolve
What is saturated solutions
500
a solution containing a lot of solute
What is concentrated
500
how do you know when you have a saturated salt solution
when there is as much solid material as possible that has dissolved in the liquid and then there is still solid material on the bottom or top
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