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