Ammonia Fountain
Click on the correct answer.
1
What is the physical state of ammonia under usual conditions?
gas
liquid
solid
plasma
2
What is characteristic of an equilibrium reaction?
Only the products of its chemical equation are present
Only the reactants of its chemical equation are present
Both the reactants and the products of its chemical equation are present
It is in balance
3
What is an indicator?
a pointer
a substance which gives off light
a piece of glassware
a substance that changes color in acid and base
an instrument
4
The little bit of water first added to the upper flask from the inverted dropper
reacted with the indicator
reacted with the invisible ammonia gas in the upper flask
pulled up the water from the lower beaker
resulted in the evolution of heat
turned purple
5
The name of the type of glassware used for the upper flask was
a beaker
an erlenmeyer
a graduated cylinder
a volumetric flask
a Florence flask
6
When the drops of added water pulled in the ammonia gas by reacting with it,
pressure was created in the upper flask
a partial vacuum was created in the upper flask
pressure was created in the beaker
the water in the beaker boiled
the ammonia reacted with the indicator
7
The indicator used in this demonstration
was grape juice
was litmol
was kool-aide
was phenolphthalein
was litmus
8
In the ammonia and water reaction which species are present at equilibrium:
water
ammonia
ammonium ion
hydroxide ion
litmus
9
Which specie makes the ammonia and water equilibrium basic?
water
ammonia
ammonium ion
hydroxide ion
air
10
Which is true:
litmus is orange in acid
litmus is purple in acid
limus is orange in base
litmus is colorless in acid
litmus is purple in base