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new C2 Flashcards

1
Q

What is the basic unit of a chemical element?

A

Atom

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2
Q

What type of bond involves the sharing of electron pairs between atoms?

A

Covalent bond

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3
Q

True or False: Ionic bonds form between metals and non-metals.

A

True

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4
Q

Fill in the blank: The _____ of an atom is determined by the number of protons it has.

A

Atomic number

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5
Q

What is the charge of a neutron?

A

Neutral

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6
Q

What is the name of the structure formed when many ions are held together by ionic bonds?

A

Ionic lattice

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7
Q

Which type of bonding occurs in metals?

A

Metallic bonding

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8
Q

What is the main characteristic of metallic bonds?

A

Delocalized electrons

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9
Q

True or False: Molecules formed by covalent bonding can be polar or non-polar.

A

True

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10
Q

What is a simple covalent molecule example?

A

Water (H2O)

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11
Q

What type of structure do ionic compounds form?

A

Giant ionic structure

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12
Q

What is the main property of ionic compounds?

A

High melting and boiling points

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13
Q

Fill in the blank: The force of attraction between oppositely charged ions is called _____ attraction.

A

Electrostatic

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14
Q

What is the term for the energy required to break a bond?

A

Bond dissociation energy

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15
Q

What is the shape of a water molecule?

A

Bent or V-shaped

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16
Q

What is an example of a metallic compound?

A

Copper (Cu)

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17
Q

True or False: Covalent compounds conduct electricity in solid form.

A

False

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18
Q

What is the primary reason for the high melting point of ionic compounds?

A

Strong ionic bonds

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19
Q

What type of bond is formed when two atoms have a large difference in electronegativity?

A

Ionic bond

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20
Q

Which type of structure is characteristic of diamond?

A

Giant covalent structure

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21
Q

What is the bond angle in a tetrahedral molecule?

A

109.5 degrees

22
Q

What does the term ‘electronegativity’ refer to?

A

The ability of an atom to attract electrons

23
Q

Fill in the blank: In an ionic bond, metals _____ electrons to become positive ions.

24
Q

What is the formula for sodium chloride?

25
Q

What type of bond is formed between two nonmetals?

A

Covalent bond

26
Q

True or False: All covalent compounds are gases or liquids at room temperature.

27
Q

What is the name of the structure formed by carbon atoms in graphite?

A

Layered structure

28
Q

Which type of bonding is responsible for the malleability and ductility of metals?

A

Metallic bonding

29
Q

What is the effect of increasing the number of shared electron pairs in a covalent bond?

A

Increases bond strength

30
Q

What is a common property of covalent compounds?

A

Lower melting and boiling points compared to ionic compounds

31
Q

Fill in the blank: The _____ model describes the arrangement of electrons in metals.

A

Sea of electrons

32
Q

What type of intermolecular force is present in water?

A

Hydrogen bonding

33
Q

What is the term for a group of atoms bonded together that behaves as a single unit?

34
Q

True or False: Ionic compounds can conduct electricity when dissolved in water.

35
Q

What is the typical bond angle in a linear molecule?

A

180 degrees

36
Q

What is the main characteristic of a covalent network solid?

A

Atoms are bonded by covalent bonds in a continuous network

37
Q

What is the formula for carbon dioxide?

38
Q

What type of bonding is found in metals like gold and silver?

A

Metallic bonding

39
Q

Fill in the blank: The _____ of an ionic compound is determined by the charge of its ions.

A

Lattice energy

40
Q

What is the name of the force that holds atoms together in a covalent bond?

A

Covalent bond

41
Q

What is the primary reason for the conductivity of metals?

A

Delocalized electrons

42
Q

True or False: Ionic compounds are usually soluble in organic solvents.

43
Q

What is the bond angle in a trigonal planar molecule?

A

120 degrees

44
Q

What do we call the energy required to separate one mole of a substance into its gaseous ions?

A

Lattice enthalpy

45
Q

Fill in the blank: The _____ theory explains the shape of molecules based on electron pair repulsion.

46
Q

What is the term for the maximum number of electrons that can occupy a single orbital?

47
Q

What type of intermolecular force is generally the weakest?

A

London dispersion forces

48
Q

What is the primary factor that affects the strength of ionic bonds?

A

The charge of the ions

49
Q

What is the term for a negatively charged ion?

50
Q

What is the common name for a substance that can donate a proton?

51
Q

Fill in the blank: In a polar covalent bond, electrons are shared _____ between the two atoms.

52
Q

What is the shape of a molecule with two bonded pairs and no lone pairs?

further maths (10 decks)

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