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WorksheetsStructure and Bonding Unit 2
Total questions: 70
Worksheet time: 36mins
What shape are carbon nanotubes?
Pyramidal
Cubic
Cylindrical
Spherical
What is a limitation of the particle model?
The particle model assumes that particles have no forces between them
The particle model assumes that particles should be square
The particle model assumes that there are more particles than in real life
The particle model assumes that there are fewer particles than in real life
In graphite, how many covalent bonds does each carbon atom form?
1
2
3
4
Which one of these is NOT a property of a fullerene?
A hollow shape
Hexagonal carbon rings
A molecule of carbon atoms
Short length and large diameter
Metals consist of giant structures of arranged in a regular pattern.
atoms
neutrons
molecules
protons
Non-metal atoms become negatively charged ions by…
gaining electrons
sharing electrons
losing electrons
gaining protons
Which of these is NOT an example of a giant covalent substance?
Graphite
Sodium chloride
Diamond
Silicon dioxide
Ionic bonding is the bonding between…
metals and non-metals
metals and metals
non-metals and non-metals
gold and silver
Which of these statements is NOT true?
Ionic compounds can conduct electricity when…
they are melted
they are dissolved in water
electrons are free to move
ions are free to move
In metallic bonding, the electrons are…
stationary
delocalised
donated
gained
Simple covalent molecules have…
weak intermolecular forces
strong intermolecular forces
weak electrostatic forces
strong electrostatic forces
In pure metals, atoms are arranged in…
no order
groups of 3
layers
circles
Covalent bonding is the bonding between…
metals and non-metals
metals and metals
non-metals and non-metals
metals and gases
What takes place at the boiling point?
Freezing and boiling
Melting and freezing
Condensing and melting
Boiling and condensing
In a simple covalent bond diagram, a single covalent bond is represented using…
a double line
a dotted line
a squiggle
a single line
Define the term 'alloy'.
Non-metal and metal chemically bonded together
More than one metal chemically bonded together
A metal and rock
Two non-metals chemically bonded together
What is a nanometre?
A billionth of a metre
A hundredth of a metre
A thousandth of a metre
A millionth of a metre
How many carbon atoms are there in a molecule of Buckminsterfullerene?
60
50
40
30
In diamond, how many covalent bonds does each carbon atom form?
3
4
2
5
A substance has a boiling point of 220 degrees Celsius and a melting point of −120 degrees Celsius.
What state will it be at room temperature?
Solid
Liquid
Gas
Aqueous
What property does graphite have in common with most metals?
It can conduct electricity
It is magnetic
It is hard
It is ductile
In covalent bonding, electrons are…
swapped
donated
shared
received
At room temperature and pressure, what are the state symbols for hydrogen (H2) and sodium hydroxide (NaOH)?
(g) & (s)
(s) & (aq)
(g) & (l)
(l) & (s)
When magnesium bonds with oxygen, the magnesium loses two electrons. What ion will be formed?
[Mg]+
[Mg]2-
[Mg]2+
[Mg]-
What takes place at the melting point?
Melting and freezing
Freezing and boiling
Boiling and condensing
Condensing and melting
In a molecule of ammonia, how many electrons need to be shared for nitrogen to have a full outer shell?
5
3
1
2
[Mg]2+ and [O]2- ionically bond to form magnesium oxide. What is the correct empirical formula for this compound?
MgO2
2MgO
Mg2O
MgO
Why are metals good conductors of electricity?
Because delocalised electrons carry the charge
Because atoms carry the charge
Because they are arranged in layers of atoms
Because ions carry the charge
At room temperature, polymers are what state?
Solid
Liquid
Gas
Aqueous
Which of these statements is INCORRECT?
The amount of energy needed to change state from a solid to liquid depends on…
the type of bonding
the strength of forces between particles
the colour of the substance
the structure of a substance
What happens during reduction?
Electrons are gained
Electrons are shared
Protons are lost
Electrons are lost
Atoms in a polymer are linked together by…
strong ionic bonds
strong covalent bonds
weak ionic bonds
weak covalent bonds
What is graphene?
A hollow shape
A single layer of graphite
A double layer of graphite
A spherical shape
Which of these statements is NOT characteristic of most metals?
Able to conduct electricity
High melting and boiling points
Malleable
Insulating
Ionic compounds have a regular structure that is called a…
giant ionic lettuce
giant ionic lattice
simple ionic structure
simple ionic lattice
Positive ions and negative ions are attracted by…
intermolecular forces
electrostatic forces
strong covalent bonds
sticky bonds
Electrons are shared in…
pairs
triads
groups of 3
groups of 4
Electron transfer can be shown using…
dot diagrams
cross diagrams
dot and cross diagrams
circle diagrams
Why are alloys harder than metals?
They have more ions
The layers of atoms cannot be distorted
The delocalised electons can move more freely
The atoms are bigger
Which one of these is INCORRECT?
The repeating unit of a polymer is drawn using…
brackets
single bonds
the letter 'n'
double bonds
Complete the sentence. Nanoparticles have a…
small surface area to volume ratio
large surface area to volume ratio
small surface area to length ratio
large surface area to length ratio
[Li]+ and [O]2- would ionically bond to form lithium oxide.
What is the correct empirical formula for this compound?
LiO
Li2O
2LiO
LiO2
Why do ionic compounds have high melting and boiling points?
Lots of energy is needed to break strong electrostatic bonds
Lots of energy is needed to break strong intermolecular forces
Lots of energy is needed to break weak electrostatic bonds
Lots of energy is needed to break weak intermolecular forces
Atoms are most stable when…
they move around
the electrons move
they become charged
they have full outer shells
Which one of these properties of diamond is NOT correct?
High melting point
Hard
Does not conduct electricity
Malleable
What is a polymer?
A chain of monomers
A chain of carbon atoms
A large ionic compound
A metal
When metal atoms lose electrons they become…
elements
negatively charged ions
positively charged ions
chemical bonds
In graphite, how many electrons from each carbon atom are delocalised?
1
2
3
4
What happens during oxidation?
Electrons are gained
Electrons are shared
Protons are lost
Electrons are lost
Most metals have high melting and boiling points because…
they have strong ionic bonds
they have strong intermolecular forces
they have strong covalent bonds
they have strong metallic bonds
Ionic bonds are formed between...
Non - metals
A metal and a non-metal
Metals
Which of the below is an ionic compounds?
Ni
MgCl2
H2O
CH4
How is an ionic bond formed?
Sharing of electrons
Delocalised electrons
Transfer of electrons
An example of an ionic compound is Sodium Chloride, which is made from Na+ and Cl- ions. Why do these ions form an ionic bond?
They have like charges
They are from the same group
They are from the same period
They have opposite charges
Lead Chloride is an ionic compound, made up from Pb2+ ions and Cl- ions. Which is the correct formula for this compound?
PbCl3
PbCl
PbCl4
PbCl2
Which of the following is true for ionic bonding & ionic compounds? (3 correct statements)
They must be made of ions with like charges.
The negative ion must be written first.
Compounds must have an overall charge of zero.
They are made of metals and nonmetals.
The positive ion must be written first.
Which properties are all characteristics of ionic compounds?
solids with high melting and boiling points
soft solids which are highly malleable
when solid, the ions are held in place so the compounds cannot conduct electricity
conduct electricity when dissolved or molten
What properties does an ionic compound have?
A low boiling point and it conducts electricity when dissolved in water
A high melting point and it conducts electricity when molten or dissolved
A high boiling point and it conducts electricity when solid
Why do ionic compounds NOT conduct electricity when they are in their solid state?
Their ions are free to move.
Their ions are held in fixed positions.
Their electrons are free to move
Their electrons are held in a fixed state
Ionic compounds conduct electricity when dissolved in water. Which statement below best explains the property?
Ions are free to move.
Electrons are free to move.
Bonds are strong.
There are weak intermolecular forces of attraction.
Why do ionic compounds have high melting and boiling points?
Their ions are free to move.
Their ions are held in fixed positions.
They have many strong bonds which require a large amount of heat energy to overcome these strong bonds.
They have weak bonds which require a little amount of heat energy to overcome these weak bonds.
Which three of the following are features of ionic compounds? (click 3 boxes)
They have bonds between metals and non-metals.
They have bonds between two non-metals.
They form simple molecular structures.
They form giant ionic lattices.
They involve the transfer of electrons.
Be and F can combine to form BeF2, an ionic compound. Select ALL the true statements.
Each Be atom loses two electrons from the outer shell.
Each F atom gains two electrons from Be.
The force holding the ionic compound together is electrostatic attraction.
Each F ion has a charge of -1
Select all the true statements:
Each outer shell electron in Cl is represented by a cross.
In Na, the total charge is -2.
Na+ and Cl- are held together by electrostatic attraction.
Na+ has a full outer shell of electrons.
A single crystal of table salt (Sodium Chloride) is one giant ionic lattice, the Na+ and Cl- ions are held together in a (a) lattice.
Match the following to form true statements:
When solid, ionic compounds
cannot conduct electricity
When melted ionic compounds
can conduct electricity
Ionic compounds have
high melting and high boiling points
There are many strong bonds
between ions in an ionic compound.
Elements in group 1 of the periodic table form ions
with a charge of 1+
Sodium Oxide is Na2O. Meaning there are 2 Na present for every O in the ionic compound. As the Oxygen ion has a charge of -2, what charge does each Sodium ion have?
-1
-2
+2
+1
This is an image of the giant ionic lattice representing Sodium Chloride, what is represented by the +?
Cl ion
Cl atom
Na atom
Na ion
What is the correct formula for aluminium oxide? Aluminium is in group 3 and oxygen is in group 6.
Al₂O₃
AlO
AlO₄
Al₂O
Al₃O₂
