1.3 Bonding Flashcards
What is a compound?
Compounds are atoms of different elements chemically bonded together.
What is ionic bonding?
Ionic bonding is when ions are held together by electrostatic attraction.
(see page 24 in the revision guide for some more information)
What ions are formed in group 1?
1+ ions
What ions are formed in group 2?
2+ ions
What ions are formed in group 6?
2- ions
What ions are formed in group 7?
1- ions
What charge is a sulphate ion?
SO4 2-
What charge is a hydroxide ion?
OH-
What charge is a nitrate ion?
NO 3-
What charge is a carbonate ion?
CO3 2-
What charge is ammonium?
NH 4+
Describe the structure of sodium chloride.
(see page 25 in the revision guide)
How does ionic structure explain the behaviour of ionic compounds?
- Ionic compounds conduct electricity when they’re molten or dissolved.
- Ionic compounds have high melting points.
- Ionic compounds tend to dissolve in water.
(see page 25 in the revision guide for a detail of each)
What is a molecule?
A molecule is two or more atoms bonded together.
Molecules are help together by strong covalent bonds.
How do electrons relate to a covalent bond?
A single covalent bond contains one shared pair of electrons.
How does the structure of graphite explain its properties?
(see page 26 in the revision guide)
How does the structure of diamond explain its properties?
(see page 27 in the revision guide)
What is dative bonding?
Dative bonding is where both electrons come from one atom in a covalent bond.
(see page 27 in the revision guide for an example)
Draw the shape of a linear molecule, what is its bond angle?
(see page 29 in the revision guide)
Draw the shape of a trigonal planar model, what is its bond angle?
(see page 29 in the revision guide)
Draw the shape of a tetrahedral molecule, what is its bond angle?
(see page 29 in the revision guide)
Draw the shape of a trigonal pyramidal, what is its bond angle?
(see page 29 in the revision guide)
Draw the shape of a bent molecule, what is its bond angle?
(see page 29 in the revision guide)
Draw the shape of a trigonal bipyramidal molecule, what is its bond angle?
(see page 29 in the revision guide)