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WorksheetsSolubility IGCSE
Total questions: 20
Worksheet time: 10mins
The ratio of solute in a solution to the solvent or total solution is called ____________
concentration
solubility
miscibility
dilution
Why is trail mix considered a mixture?
The particles are very small.
The trail mix can be put together easily.
Each parts keeps its own properties.
All the colors and flavors fit well together.
Two substances have been combined physically and appear the same throughout is called a.........
A heterogeneous mixture
A homogeneous mixture
An element
A compound
We start with 2 glasses that have the same amount of solvent.
Glass 1 has 25 ml of salt and glass 2 has 50 ml of salt.
Which glass has a more dilute solution?
Solution in Glass 1
Solution in Glass 2
Both solutions are equally diluted
None of the above
What affect does temperature have on the solubility of solid?
Increases the solubility
Decreases the solubility
Has no effect
None of the above
Property of water where water molecules can "climb" structures
E.g. straws in juice glass make use of this property
adhesion
capillary action
boiling point
universal solvent
When a solvent contains as much of the solute as it can hold, the solution is said to be
supersaturated
diluted
saturated
unsaturated
How does a solution become supersaturated?
dissolve lots of solute in it.
dissolve a little solute in it.
dissolve more solute than you should be able to, by heating it or adding pressure
dissolve a super amount of solvent in it.
At 30°C, which substance has the lowest solubility?
KNO3
KBr
NaCl
Yb2(SO4)3
At 10°C, NaNO3's solubility is 80 g/100 g of H2O.
Based on this information, what would the solubility be in 50 g of H2O.
40
80
160
16
Identify a method to decrease the dissolving rate of a solution:
decrease the temperature
stir the solution
increase the temperature
powder the solute
How many grams are soluble in 100 g of water at 100 ºC?
300 g
250 g
100 g
50 g
When you measure how fast a solute dissolves, you are measuring the
solubility
rate of solubility
rate of particle movement
amount of dissolving
Sugar dissolves faster in hot tea compared to iced tea.
What is the factor affecting the rate of solubility in the statement above?
Rate of stirring
Temperature
Size of solute
Total surface area
Why do sugar particles dissolve faster in hot water?
water particles move slow
water particles move fast
water particles settle down
water particles stay on top
Which of the colours in the given chromatogram is not a pure colour?
black
red
blue
green
orange
A substance is soluble if it can be dissolved.
In paper chromatography, the most soluble solute _____________________ .
travels furthest away from the start point
does not move from the start point
stays closest to the start point
can be found in the middle of the chromatogram
The given chromatogram was obtained when a sample X was analysed and compared with four other known dyes P, Q, R and S.
Dye Q was known to cause cancer.
Which of the following dye(s) is/are safe for use?
P only
S only
P and S
P and X
The Rf value for the blue component is
0.3
0.7
10
3
Which plant species has plant pigments most similar to those in A?
B
C
D
None of these
