Essential Chemistry for IGCSE - Structure And Bonding (Section 6)
1
Which of the following best describes the forces within a diamond crystal?
2
What is the role of electrons in covalent bonding?
Answer(B)
They are shared between atoms.
3
Which statement best describes the structure of silicon dioxide?
Answer(C)
It has a giant covalent structure.
4
What are the properties of ionic compounds?
5
What is the name given to the compound formed when a metal reacts with a non-metal?
6
What is the shape of a methane (CH4) molecule?
7
Which type of bond involves the sharing of a pair of electrons?
8
What type of element typically accepts electrons to form an ion?
9
What is the role of the outer shell electrons in bonding?
Answer(B)
They determine the chemical properties of an element and participate in bonding.
10
Which of the following elements typically forms an anion?
11
What is a key difference between ionic and covalent compounds regarding their solubility?
Answer(C)
Ionic compounds are generally soluble in water, while covalent compounds may or may not be soluble.
12
Which of the following molecules contains a double covalent bond?
13
Which of the following is a characteristic of a substance with strong intermolecular forces?
14
What is the name given to the repeating three-dimensional structure in ionic compounds?
15
What causes the layers in graphite to slide over each other?
Answer(C)
Weak forces of attraction between the layers.
16
What are the main types of forces that exist between simple molecules?
17
What type of bonding is associated with compounds with high melting and boiling points, and that conducts electricity when in molten state?
18
Which statement describes the attraction between ions in an ionic compound?
Answer(A)
It is a strong attraction.
19
What is a key characteristic of a substance that has strong intermolecular forces?
20
In ionic bonding, what happens to electrons?
Answer(B)
They are transferred from one atom to another.
