874489
Frage 1
Frage
Who first ordered elements by atomic mass?
Antworten
-
Mendeleev
-
Dalton
-
Newlands
Frage 2
Frage
Who created the law of octaves for ordering elements?
Antworten
-
Mendeleev
-
Dalton
-
Newlands
Frage 3
Frage
Who created the modern periodic table?
Antworten
-
Mendeleev
-
Dalton
-
Newlands
Frage 4
Frage
True or false? The reason why Mendeleev's periodic table worked was because he left gaps for undiscovered elements which may have had similar properties.
Antworten
- True
- False
Frage 5
Frage
What is unusual about the pair of elements tellurium (Te, Z = 52) and iodine (I, Z = 53)?
Antworten
-
Tellurium has similar properties to the halogens and is placed with them, while iodine has similar properties to Group 6 and is placed with them
-
Tellurium has a higher relative atomic mass than iodine
-
Tellurium has 7 outer electrons although it is placed in Group 6, and iodine has 6 outer electrons but is placed in Group 7
Frage 6
Frage
True or false? In the modern periodic table, elements are arranged by mass number.
Antworten
- True
- False
Frage 7
Frage
True or false? Larger atoms lose electrons more easily and gain electrons less easily than smaller atoms.
Antworten
- True
- False
Frage 8
Frage
Which of these are the most reactive in their respective groups?
Antworten
-
Potassium, Group 1
-
Fluorine, Group 7
-
Chlorine, Group 7
-
Sodium, Group 1
-
Rubidium, Group 1
-
Bromine, Group 7
Frage 9
Frage
Which of these are properties of alkali metals?
Antworten
-
They have a low density
-
They form coloured compounds and solutions
-
They form white compounds and colourless solutions
-
They have high melting and boiling points
-
They have low melting and boiling points
-
They have a high density
Frage 10
Frage
True or false? Caesium is less reactive than lithium as reactivity decreases going down the group.
Antworten
- True
- False
Frage 11
Frage
What ion would you expect potassium (K) to form?
Antworten
-
K+
-
K2+
-
K-
-
K2-
Frage 12
Frage
What do alkali metals produce on reaction with water?
Antworten
-
Metal chlorides
-
Metal nitrates
-
Metal sulphates
-
Metal hydroxides
-
Metal oxides
Frage 13
Frage
Which of these are properties of transition metals?
Antworten
-
They have a low density
-
They have a high density
-
They form white compounds and colourless solutions
-
They form coloured compounds and solutions
-
They have low melting and boiling points
-
They have high melting and boiling points
Frage 14
Frage
True or false? Transition metals corrode easily.
Antworten
- True
- False
Frage 15
Frage
What colour are copper (II) ions?
Antworten
-
Red
-
Green
-
Blue
Frage 16
Frage
Which of these is the correct formula of vanadium (V) oxide?
Antworten
-
VO5
-
V5O
-
V2O5
-
V5O2
Frage 17
Frage
Which of these are properties of the halogens?
Antworten
-
Low melting and boiling points
-
High melting and boiling points
-
Exist as diatomic molecules
-
Exist as free radicals
-
Good conductors of electricity
-
Poor conductors of electricity
Frage 18
Frage
True or false? Reactivity in the halogens decreases going down the group.
Antworten
- True
- False
Frage 19
Frage
Which of these ions would you expect iodine (I) to form?
Antworten
-
I+
-
I2+
-
I-
-
I2-
Frage 20
Frage
Which halogen would displace chloride ions?
Antworten
-
Iodine
-
Bromine
-
Astatine
-
Fluorine
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