gcse aqa bonding, structure and properties

Question 1

What is the definition of ionic bonding?

Answer 1

Ionic bonding is the electrostatic attraction between oppositely charged ions.

Question 2

True or False: Ionic compounds typically have high melting and boiling points.

Answer 2

True

Question 3

What type of structure do ionic compounds form?

Answer 3

Ionic compounds form a crystalline lattice structure.

Question 4

Fill in the blank: In ionic bonding, metals _____ electrons to become positively charged ions.

Answer 4

lose

Question 5

What is covalent bonding?

Answer 5

Covalent bonding is the sharing of electron pairs between atoms.

Question 6

Which type of bond involves the sharing of electrons?

Answer 6

Covalent bond

Question 7

True or False: Covalent compounds typically have low melting and boiling points.

Answer 7

True

Question 8

What is the difference between a simple covalent molecule and a giant covalent structure?

Answer 8

Simple covalent molecules consist of a few atoms, while giant covalent structures consist of a large network of atoms bonded together.

Question 9

What type of structure do metals have?

Answer 9

Metals have a metallic structure characterized by a lattice of positive ions surrounded by a sea of delocalized electrons.

Question 10

Fill in the blank: Metals are good conductors of electricity due to the presence of _____ electrons.

Answer 10

delocalized

Question 11

What is the main characteristic of metallic bonding?

Answer 11

Metallic bonding is the attraction between metal ions and delocalized electrons.

Question 12

True or False: All ionic compounds are soluble in water.

Answer 12

False

Question 13

What property of metals allows them to be shaped into wires?

Answer 13

Malleability

Question 14

What is an example of a giant covalent structure?

Answer 14

Diamond or graphite

Question 15

Fill in the blank: The strength of a covalent bond is determined by the number of _____ shared.

Answer 15

electrons

Question 16

What is the term for a bond formed by the transfer of electrons?

Answer 16

Ionic bond

Question 17

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

Answer 17

False

Question 18

What is the primary factor that determines the properties of a substance?

Answer 18

The type of bonding and structure it possesses.

Question 19

What type of structure does sodium chloride (NaCl) have?

Answer 19

It has a cubic ionic lattice structure.

Question 20

Fill in the blank: In a metallic lattice, the positive ions are held in place by _____ attraction to the delocalized electrons.

Answer 20

electrostatic

Question 21

What type of bond is found in water (H2O)?

Answer 21

Covalent bond

Question 22

True or False: Ionic compounds can conduct electricity when solid.

Answer 22

False

Question 23

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

Answer 23

Bond dissociation energy

Question 24

What is the difference between a polar and nonpolar covalent bond?

Answer 24

A polar covalent bond has an unequal sharing of electrons, while a nonpolar covalent bond has an equal sharing.

Question 25

Fill in the blank: The _____ model is used to describe the arrangement of atoms in a metallic solid.

Answer 25

sea of electrons

Question 26

What is the bond angle in a tetrahedral molecular shape?

Answer 26

109.5 degrees

Question 27

True or False: Graphite is a good conductor of electricity.

Answer 27

True

Question 28

What is an example of a simple covalent molecule?

Answer 28

Water (H2O)

Question 29

What type of intermolecular forces exist between polar molecules?

Answer 29

Dipole-dipole forces

Question 30

Fill in the blank: Metallic substances are typically _____ and have a shiny appearance.

Answer 30

lustrous

Question 31

What happens to the electrons in a metallic bond?

Answer 31

They are delocalized and free to move throughout the structure.

Question 32

What is a characteristic property of ionic compounds in solution?

Answer 32

They conduct electricity.

Question 33

True or False: The boiling point of a substance is influenced by the type of bonding present.

Answer 33

True

Question 34

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

Answer 34

Linear

Question 35

Fill in the blank: A molecule with a central atom bonded to three other atoms and one lone pair has a _____ shape.

Answer 35

trigonal pyramidal

Question 36

What type of bond is formed between two nonmetals?

Answer 36

Covalent bond

Question 37

What is the primary reason for the high melting and boiling points of ionic compounds?

Answer 37

Strong electrostatic forces between ions.

Question 38

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

Answer 38

VSEPR