WS_ Revision_ Topic 1 and 2_MCQ
Name: .......................................................................... Marks Obtained: ........................
1 Which substances would diffuse most quickly?
A carbon dioxide at 0 °C
B carbon dioxide at 25 °C
C neon at 0 °C
D neon at 25 ° C
2
3 Why does molten sodium chloride conduct electricity?
A An electron is completely transferred from sodium to chlorine.
B Sodium ions are only weakly attracted to the chloride ions.
C The electrons in the sodium chloride are free to move.
D The sodium ions and the chloride ions are free to move.
4 An element X forms a positive ion with the electronic structure 2,8,8.
What is the proton (atomic) number of X?
A 16 B 17 C 18 D 19
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, 5 Which two substances are elements with a giant molecular structure?
A diamond and graphite
B diamond and sand
C methane and iodine
D methane and sand
6 Which particle contains most electrons?
7 Which pair of elements, when combined together, do not form a covalent compound?
A caesium and fluorine
B nitrogen and chlorine
C phosphorus and fluorine
D sulfur and chlorine
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Name: .......................................................................... Marks Obtained: ........................
1 Which substances would diffuse most quickly?
A carbon dioxide at 0 °C
B carbon dioxide at 25 °C
C neon at 0 °C
D neon at 25 ° C
2
3 Why does molten sodium chloride conduct electricity?
A An electron is completely transferred from sodium to chlorine.
B Sodium ions are only weakly attracted to the chloride ions.
C The electrons in the sodium chloride are free to move.
D The sodium ions and the chloride ions are free to move.
4 An element X forms a positive ion with the electronic structure 2,8,8.
What is the proton (atomic) number of X?
A 16 B 17 C 18 D 19
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, 5 Which two substances are elements with a giant molecular structure?
A diamond and graphite
B diamond and sand
C methane and iodine
D methane and sand
6 Which particle contains most electrons?
7 Which pair of elements, when combined together, do not form a covalent compound?
A caesium and fluorine
B nitrogen and chlorine
C phosphorus and fluorine
D sulfur and chlorine
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