MCQS
What does the word Insoluble mean?
Does not dissolve.
Does dissolve.
Is part of a solid
Does not dissolve.
Crystallization is NOT included in making insoluble salts.. TRUE OR FALSE
TRUE
Metal + Acid --> Salt + _____
hydrogen
Why is excess of the insoluble reactant added when making a soluble salt?.
To separate the solid from the solution
To make sure all the acid is used up
To have the reaction happen faster
To make sure a reaction occurs
To make sure all the acid is used up
Titration reaction produces an insoluble salt. TRUE OR FALSE
FALSE
ANS= PRECIPITATION REACTION
How do you separate an excess insoluble reactant from a solution
You use ______ to separate an excess insoluble reactant from a solution
FILTERATION
Arrange the steps in order of making copper(II) sulfate from copper (II) oxide.
1
Evaporate some of the water from the filtrate and leave to crystallize.
2
The solution turns blue as the reaction occurs showing that copper (II) sulfate is being formed.
3
Add insoluble copper(II) oxide to sulfuric acid and stir. Warm gently.
4
When the reaction is complete filter the solution to remove excess copper (II) oxide.
1- Add insoluble copper(II) oxide to sulfuric acid and stir. Warm gently.,
2-The solution turns blue as the reaction occurs showing that copper (II) sulfate is being formed.,
3-When the reaction is complete filter the solution to remove excess copper (II) oxide.
4- Evaporate some of the water from the filtrate and leave to crystallize.
True
The first part comes from the metal, metal oxide or _____
metal carbonate