Hydration and Crystallization of Salts
Chemistry ⇒ Acids, Bases, and Salts
Hydration and Crystallization of Salts starts at 9 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Hydration and Crystallization of Salts.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 10
A student dissolves a salt in water and allows the solution to evaporate slowly. Crystals form. What is this process called?
A student heats a sample of hydrated magnesium sulfate and observes that it loses mass. What is the most likely explanation for this observation?
Define water of crystallization.
Describe the process of crystallization of a salt from its solution.
Describe what happens when you heat hydrated iron(II) sulfate crystals.
A sample of hydrated sodium carbonate (Na2CO3·xH2O) weighs 322 g. After heating, the anhydrous salt weighs 106 g. Calculate the value of x. (Na=23, C=12, O=16, H=1)
A student dissolves a salt in water and allows the solution to evaporate slowly. Crystals form. What is this process called?
A student heats a sample of hydrated magnesium sulfate and observes that it loses mass. What is the most likely explanation for this observation?
Which of the following hydrated salts is used in the manufacture of plaster of Paris?
(1) Gypsum
(2) Epsom salt
(3) Blue vitriol
(4) Glauber's salt
Which of the following is an example of a hydrated salt?
(1) Sodium chloride
(2) Copper(II) sulfate pentahydrate
(3) Potassium nitrate
(4) Calcium oxide
Which of the following is NOT a property of hydrated salts?
(1) They contain water molecules in their structure
(2) They are always white in color
(3) They can lose water on heating
(4) They have a fixed composition
Which of the following is the correct formula for Epsom salt?
(1) MgSO4
(2) MgSO4·7H2O
(3) MgCl2
(4) MgCO3
Fill in the blank: The blue color of hydrated copper(II) sulfate is due to the presence of __________.
Fill in the blank: The number of water molecules present in one formula unit of a hydrated salt is called its __________.
Fill in the blank: The process of forming crystals from a solution is called __________.
The process of removing water of crystallization from a hydrated salt is called __________.
True or False: All salts can form hydrates.
True or False: Anhydrous salts contain water of crystallization.
True or False: Blue vitriol is the common name for hydrated copper(II) sulfate.
True or False: The process of crystallization can be used to purify salts.
