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IGCSE™️ Chemistry: Atoms, elements and compounds Flashcards | StudBud

Explore/IGCSE™️ Chemistry: Atoms, elements and compounds

IGCSE™️ Chemistry: Atoms, elements and compounds

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Aligned to Cambridge IGCSE™️. Suitable for ages 14-16. Test your knowledge on Atoms, Elements and Compounds. #IGCSE #Chemistry #science (This resource is not endorsed by Cambridge Assessment International Education)

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Questions 8

Answers

1
Which of these molecules contains a double covalent bond?
Ethene
Nitrogen, Methanol, Ethene, Carbon dioxide
Nitrogen, Ethene, Carbon dioxide
Ethene, Carbon dioxide
2
Which statement is not true about the particle with the electronic structure, 2,8,8?
It could be unreactive.
It could be a K+ ion.
It could be an F− ion.
It could exist as monatomic particles.
3
Which structure will conduct electricity when solid?
B
C
D
A
4
Which statement applies to diamond and silicon dioxide, but not to graphite?
Very high melting and boiling points and is soft and and slippery.
Each atom is joined to three other atoms by strong covalent bonds.
Very high melting and boiling points, but does not conduct electricity.
Very high melting and boiling points and also conducts electricity.
5
A covalent molecule contains 4 shared electrons. What is it?
Ammonia
Water
Chlorine
Methane
6
Which of the following statements is true?
Calcium chloride, iron oxide and brass are all compounds.
Calcium, chlorine and carbon are all elements.
Calcium, gold and helium are all metals.
Air, sea water and sodium chloride are all mixtures.
7
What is the name of the force which occurs in a chemical bond?
electromagnetic force
gravitational force
electrostatic force
magnetic force
8
Which structure will have the lowest boiling point?
A
B
D
C