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Combined Chemistry > Chemical Bonding > Flashcards

Chemical Bonding Flashcards

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1
Q

What type of bond is formed when electrons are transferred from one atom to another?

A

Ionic bond

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2
Q

What type of bond involves the sharing of electrons between atoms?

A

Covalent bond

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3
Q

How many covalent bonds are present in a molecule of CH₄?

A

Four covalent bonds

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4
Q

Write the formula of the ionic compound formed between Na⁺ and O²⁻.

A

Na₂O

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5
Q

What is a lone pair of electrons?

A

A pair of valence electrons not involved in bonding

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6
Q

What kind of bond exists in O₂ molecules?

A

Double covalent bond

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7
Q

What is the electronic configuration of a Cl⁻ ion?

A

2, 8, 8

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8
Q

What is the name of the compound with the formula CaCl₂?

A

Calcium chloride

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9
Q

Why do ionic compounds have high melting points?

A

Strong electrostatic forces of attraction between oppositely charged ions

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10
Q

What is the formula of the compound formed between Al³⁺ and O²⁻ ions?

A

Al₂O₃

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11
Q

What type of structure and bonding does diamond have?

A

Giant covalent structure with covalent bonding

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12
Q

Why do covalent compounds have low melting and boiling points?

A

Weak intermolecular forces of attraction

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13
Q

What is a coordinate bond?

A

A covalent bond where both electrons are provided by one atom

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14
Q

What is the bonding type in a water molecule (H₂O)?

A

Covalent bonding

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15
Q

Name the bond formed between hydrogen and chlorine atoms in HCl.

A

Covalent bond

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16
Q

What happens to electrons in ionic bonding?

A

Electrons are transferred from one atom to another (e.g., gain or loss)

17
Q

Which type of bond is found in nitrogen gas (N₂)?

A

Triple covalent bond

18
Q

Write the formula of the ionic compound formed between Mg²⁺ and SO₄²⁻.

A

MgSO₄

19
Q

What is the charge of the ion formed when an atom of oxygen gains two electrons?

A

2⁻

20
Q

State the type of bond in ammonia (NH₃).

A

Covalent bond

21
Q

Why do ionic compounds conduct electricity when molten but not when solid?

A

Ions are free to move in the molten state but not in the solid state

22
Q

Write the electron configuration of a sodium ion (Na⁺).

A

2, 8

23
Q

What is the name of the compound with the formula KCl?

A

Potassium chloride

24
Q

What is the formula of the compound formed between Ba²⁺ and NO₃⁻ ions?

A

Ba(NO₃)₂

25
Q

How does ionic bonding differ from covalent bonding in terms of electron movement?

A

Ionic: Electrons are transferred; Covalent: Electrons are shared.

26
Q

Write the formula of the compound formed between Ba²⁺ and NO₃⁻ ions.

A

Ba(NO₃)₂

27
Q

Write the formula of the ionic compound formed between Fe³⁺ and Cl⁻ ions.

A

FeCl₃

28
Q

Write the formula of the ionic compound formed between Fe³⁺ and Cl⁻ ions.

A

FeCl₃

29
Q

Why do simple covalent molecules not conduct electricity?

A

They do not have free-moving charged particles (ions or electrons).

30
Q

What type of bonding is found in carbon dioxide (CO₂)?

A

Covalent bonding

Combined Chemistry (3 decks)

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