2469942
Descripción
Test por Oliver Cusack, actualizado hace más de 1 año
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Creado por Oliver Cusack
hace más de 9 años
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|
Pregunta 1
Pregunta
In a flame, lithium compounds turn it .......
Respuesta
-
Lilac
-
Green
-
Yellow
-
Crimson
-
Red
Pregunta 2
Pregunta
In a flame, Sodium compounds turn it .......
Respuesta
-
Crimson
-
Lilac
-
Yellow
-
Green
-
Red
Pregunta 3
Pregunta
In a flame, potassium compounds turn it ....
Respuesta
-
Green
-
Lilac
-
Red
-
Crimson
-
Yellow
Pregunta 4
Pregunta
In a flame, calcium compounds turn it...
Respuesta
-
Red
-
Green
-
Crimson
-
Yellow
-
Lilac
Pregunta 5
Pregunta
In a flame, barium compounds turn it .....
Respuesta
-
Yellow
-
Lilac
-
Crimson
-
Red
-
Green
Pregunta 6
Pregunta
How can Halide ions be tested?
Respuesta
-
Flame test
-
With Sodium Hydroxide
-
Bromine Test
-
With Silver Nitrate
Pregunta 7
Pregunta
Silver Chloride is a ........ precipitate.
Respuesta
-
White
-
Cream
-
Pale yellow
Pregunta 8
Pregunta
Silver Bromide is a ...... precipitate
Respuesta
-
Cream
-
White
-
Pale yellow
Pregunta 9
Pregunta
Silver Iodide is a .......... precipitate.
Respuesta
-
Cream
-
White
-
Pale yellow
Pregunta 10
Pregunta
One can test for aluminium ions, calcium ions and magnesium ions with ......
Respuesta
-
A flame test
-
Bromine wate
-
Sodium hydroxide
-
Silver nitrate
Pregunta 11
Pregunta
Aluminium, calcium and magnesium ions form ......... precipitates with sodium hydroxide solution
Respuesta
-
blue
-
white
-
green
-
cream
Pregunta 12
Pregunta
Copper (2), iron (2) and iron (3) ions can be tested ....
Respuesta
-
with sodium hydroxide solution
-
with a flame test
-
in bromine water
-
with silver nitrate
Pregunta 13
Pregunta
In excess sodium hydroxide solution, copper (2) ions form ......... precipitates.
Respuesta
-
green
-
blue
-
brown
Pregunta 14
Pregunta
In excess sodium hydroxide solution, iron (2) ions form ....... precipitates.
Respuesta
-
green
-
brown
-
blue
Pregunta 15
Pregunta
In excess sodium hydroxide solution, iron (3) ions form ....... precipitates.
Respuesta
-
brown
-
green
-
blue
Pregunta 16
Pregunta
During the Haber Process, hydrogen & nitrogen react together in these conditions:
Respuesta
-
400 degrees c
-
350 degrees c
-
450 degrees c
-
200 atmospheres
-
150 atmospheres
-
350 atmospheres
-
with a nickel catalyst
-
with a copper catalyst
-
with an iron catalyst
Pregunta 17
Pregunta
In a reversible reaction when the temperature is increased the yield from the ........
Respuesta
-
endothermic reaction increases and the yield from the exothermic decreases
-
endothermic reaction decreases and the yield from the exothermic increases
Pregunta 18
Pregunta
In a reversible reaction when the temperature is decreased the yield from the ........
Respuesta
-
endothermic reaction increases and the yield from the exothermic reaction decreases.
-
endothermic reaction decreases and the yield from the exothermic reaction increases.
Pregunta 19
Pregunta
Group 1 metals react with water, releasing
Respuesta
-
carbon dioxide
-
oxygen
-
hydrogen
Pregunta 20
Pregunta
Group 1 metals, form .......... that dissolve in water to give ........... solutions
Respuesta
-
carbonates
-
acids
-
hydroxides
-
acidic
-
alkaline
Pregunta 21
Pregunta
In gaseous reactions, an increase in pressure favours the reaction that produces the ..... number of molecules
Respuesta
-
least
-
most
Pregunta 22
Pregunta
Alcohols react sodium to produce .....
Respuesta
-
carbon dioxide
-
sodium chlroide
-
hydrogen
-
oxygen
Pregunta 23
Pregunta
Carboxylic acids are part of the ..... molecular group.
Respuesta
-
(-OH)
-
(-COO-)
-
(-COOH)
Pregunta 24
Pregunta
Carboxylic acids, react with alcohols in the presence of an ........ catalyst to produce .............
Respuesta
-
acid
-
alkaline
-
nickel
-
esters
-
a stronger acid
-
a weaker acid
Pregunta 25
Pregunta
Esters are part of the ..... molecular group
Respuesta
-
(-COO-)
-
(-OH)
-
(-COOH)
Pregunta 26
Pregunta
Newlands, and then Mendeleev, attempted to classify the elements by arranging them in order of their
Respuesta
-
atomic weights
-
atomic structure
-
atomic numbers
Pregunta 27
Pregunta
when electrons, protons and neutrons were discovered early in the 20th century, the periodic table was then arranged in order of
Respuesta
-
Atomic mass
-
Atomic structure
-
Atomic numbers
Pregunta 28
Pregunta
In Group 1, the more easily electrons are lost, the ........... number of shells
Respuesta
-
higher
-
lower
-
same
Pregunta 29
Pregunta
The less easily electrons are gained therefore the ........ number of shells is more reactive
Respuesta
-
lower
-
higher
-
same
Pregunta 30
Pregunta
What may be added to drinking water to reduce microbes and fluorides?
Respuesta
-
Oxygen
-
Chlorine
-
Weak acids
-
Iodine
-
Bromine
Pregunta 31
Pregunta
Is bond breaking exothermic or endothermic?
Respuesta
-
Endothermic
-
Exothermic
-
Both
Pregunta 32
Pregunta
Is bond formation exothermic or endothermic?
Respuesta
-
Exothermic
-
Endothermic
-
Both
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