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