CIE IGCSE Chemistry

Topic Questions

IGCSEChemistryCIETopic Questions2. Atoms, Elements & Compounds2.2 Ions & Ionic Bonds

2.2 Ions & Ionic Bonds

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11 mark

What change occurs to an atom when it forms a negative ion?

  • It loses electrons.

  • It gains protons.

  • It gains electrons.

  • It loses protons.

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21 mark

Lithium and chlorine react together to form lithium chloride. During formation, each lithium atom…..1….. one …..2….. which is completely …..3….. to the chlorine atom.

What words correctly fill gaps 1, 2 and 3?

  1 2 3
A gains electron shared
B loses electron transferred
C gains proton transferred
D loses proton shared

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31 mark

Which of the statements describes ionic bonding?

  • Electrostatic attraction between atoms

  • Electrostatic attraction between positively charged particles and delocalised electrons

  • Electrostatic attraction between oppositely charged ions

  • Electrostatic attraction between the nuclei of two atoms and a shared pair of electrons

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41 mark

Extended Only

The structure of an ionic compound, sodium chloride, is a lattice structure.

Which of the following statements about an ionic lattice structure is not true?

  • There is a regular arrangement of ions in the lattice

  • The layers of ions slide over each other easily in the lattice

  • The ions are arranged with alternating anions and cations

  • Strong electrostatic forces of attraction occur between oppositely charged ions

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51 mark

Extended Only

Magnesium is a Group II element and chlorine is a Group VII element.

These elements react together to form an ionic compound.

Which row is correct?

  Mg electron change Mg ion formed Formula of compound
A gain Mg2+ Mg2Cl
B gain Mg+ MgCl2
C lost Mg2+ MgCl2
D lost Mg+ Mg2Cl2

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11 mark

Ionic compounds are formed when a metal reacts with a nonmetal.

Which two elements combine to form this kind of compound?

Element Electronic structure
Q 2.4
R 2.8
S 2.8.1
T 2.8.7

  • S and T

  • R and S

  • Q and R

  • Q and T

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21 mark

The electronic structures of atoms X and Y are shown.

q2--2-2-mcq-hard-cie-igcse-chemistry

X and Y combine by ionic bonding.

What is the formula of the compound produced?

  • X2Y

  • X2Y2

  • X2Y4

  • XY

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31 mark

The electronic structures of atoms X and Y are shown.

q3--2-2-mcq-hard-cie-igcse-chemistry

X and Y combine by ionic bonding.

What is the formula of the compound produced?

  • X2Y

  • X2Y2

  • X2Y4

  • XY

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41 mark

Ionic compounds are formed when metals react with nonmetals.

Which row correctly describes the electron transfer when an ionic bond is formed and the nature of the bond?

  Electron transfer Nature of bond
A Metal to nonmetal Opposite ions attract
B Metal to nonmetal Opposite ions repel
C Metal to metal Same ions repel
D Nonmetal to metal Opposite ions attract

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51 mark

Ionic compounds are formed when a metal reacts with a nonmetal.

Which two elements combine to form this kind of compound?

Element Electronic structure
Q 2.8.8.1
R 2.8.7
S 2.8.4
T 2.8.8

  • Q and T

  • Q and R

  • R and S

  • S and T

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61 mark

Potassium and bromine chemically combine to form the compound potassium bromide.

During formation, each bromine atom…..1….. one electron which is completely …..2….. from the outer shell of the potassium atom. The …..3….. force of attraction is formed from the attraction between the opposite charges on each ion.

What words correctly fill gaps 1, 2 and 3?

  1 2 3
A loses shared electrical
B loses transferred intermolecular
C gains shared electrostatic
D gains transferred electrostatic

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71 mark

The table below shows four different substances.

Which substance does the type of bonding shown not match?

  Substance Type of bonding present
Ionic Covalent Metallic
A Fluorine   ✓  
B Potassium chloride ✓    
C Beryllium   ✓  
D Sodium bromide ✓    

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81 mark

Extended Only

The bonding present in a substance determines the structure and properties of that substance.

Which of the following statements is a correct description of the structure of an ionic compound?

  • A lattice structure with an irregular arrangement of alternating positive and negative ions

  • A lattice structure with a regular arrangement of alternating positive and negative ions

  • A random structure with a regular arrangement of alternating positive and negative ions

  • A random structure with an irregular arrangement of alternating positive and negative ions

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91 mark

Extended Only

The ionic lattice structure of potassium chloride is shown below.

q9--2-2-mcq-hard-cie-igcse-chemistry

Which of the following statements best describes the bonding and structure of KCl?

  • A small lattice structure held together by electrostatic forces between oppositely charged ions which act in all directions.

  • A small lattice structure held together by electrostatic forces between like charged ions which act in all directions.

  • A giant lattice structure held together by electrostatic forces between oppositely charged ions which act in all directions.

  • A giant lattice structure held together by electrostatic forces between oppositely charged ions which act in one direction only.

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101 mark

Extended Only

A student analysed an ionic compound and a covalent compound using a melting point apparatus. She found the ionic compound had a much higher melting point than the covalent compound.

Which statement explains this observation?

  • Ionic compounds are formed from metals only.

  • Ionic compounds are formed from nonmetals and nonmetals.

  • There are strong electrostatic forces of attraction in ionic compounds.

  • There are strong intermolecular forces in ionic compounds.

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11 mark

Which element does not form a stable ion with the same electronic configuration as neon?

  • Magnesium

  • Fluorine

  • Sodium

  • Chlorine

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21 mark

The electronic configuration of an ion was determined to be 2.8.8.

What could the identity of the ion be?

  Ca2+ S2-
A cross times ✓
B ✓ cross times
C ✓ ✓
D cross times cross times

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31 mark

The table below shows the properties of four substances, W, X, Y and Z.

Substance Melting point Boiling point  Conducts electricity when
  / o C / o C solid  liquid
W 3410 5930 yes yes
X 801 1413 no yes
Y 3550 4830 no no
Z -91 98 no no

Use the information in the table to identify the substance that is an ionic compound.

  • Substance W

  • Substance X

  • Substance Y

  • Substance Z

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41 mark

Extended Only

Calcium reacts with fluorine to form calcium fluoride

Which statement describes what happens to calcium atoms in this reaction?

  • Calcium ions lose electrons to form positive charges. .

  • Calcium atoms gain 3 electrons to form positive ions.

  • Calcium ions gain 2 electrons to form positive ions.

  • Calcium atoms lose 2 electrons to form positive ions.

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51 mark

Extended Only

Which of the following dot-and-cross diagrams shows the correct arrangement of electrons in lithium sulfide?

1-6-q3-edexcel-igcse-chemistry-

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