1. what does solubility refer to?
A. size of the particles that make up a substance
B. grams of solute per 100 g of solvent
C. number of moles of solute that is dossolved in a solvent
D. concentration of a solute that is dissolved in a solvent
2. Why does loose sugar dissolves much faster than sugar cube?
A. because it has a greater surface area
B. it has less kinetic energy
C. it has higher temperature
D. it has greater surface tension
3. Which of the following below refers to unsaturated solution?
A. can dissolve more solute at the current conditions
B. will precipitate out all its dissolved solute
C. can dissolve more solute only if heated
D. can dissolve more solute only if the pressure is increased
4. Why is water referred to as the universal solvent?
A. it is found throughout the universe
B. all known substances dissolve in water
C. many different substances dissolve in water
D. it covers more than half of the Earth's surface
5. All of the following will make it easier to dissolve a solute in a solvent EXCEPT
A. heating the solvent
B. stirring the solution
C. increasing the surface area of the solute
D. adding a larger amount of solute
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Answer:
1. A
2. B
3. C
4. B
5. D
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