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