857865
Questão 1
Questão
True or false? All atoms take part in reactions in order to achieve the structure of a noble gas.
Responda
- True
- False
Questão 2
Questão
Which type of bonding involves the sharing of electrons?
Responda
-
Covalent
-
Ionic
Questão 3
Questão
Which type of bonding involves the transfer of electrons?
Responda
-
Covalent
-
Ionic
Questão 4
Questão
True or false? Atoms which lose electrons become negatively charged ions.
Responda
- True
- False
Questão 5
Questão
Which of the following metals would lose two electrons to form a 2+ ion?
Responda
-
Sodium (Na)
-
Magnesium (Mg)
-
Aluminium (Al)
-
Potassium (K)
-
Calcium (Ca)
Questão 6
Questão
What holds ions together?
Responda
-
Electrostatic forces of attraction
-
Small invisible bridges
-
Nothing - they remain free-form
Questão 7
Questão
True or false? The structure of ionic compounds can be described as a giant lattice.
Responda
- True
- False
Questão 8
Questão
What type of diagram can we use to represent ionic bonding?
Responda
-
Van der Waals diagrams
-
Dot-and-cross diagrams
-
Lewis diagrams
Questão 9
Questão
True or false? The formula of an ionic compound represents the number of each atom in a molecule.
Responda
- True
- False
Questão 10
Questão
Which of these is the correct formula for barium iodide?
Responda
-
BaI
-
Ba2I
-
BaI2
Questão 11
Questão
Which of these is the correct formula for potassium phosphate?
Responda
-
KPO4
-
K3PO4
-
K(PO4)3
Questão 12
Questão
Which of these is the correct formula for iron (III) sulphate?
Responda
-
FeSO4
-
Fe2(SO4)3
-
Fe3(SO4)2
Questão 13
Questão
Between which two types of element do covalent bonds occur?
Responda
-
Metal and metal
-
Metal and non-metal
-
Non-metal and non-metal
Questão 14
Questão
How many electrons does a single covalent bond involve?
Responda
-
One
-
Two
-
Three
-
Four
Questão 15
Questão
True or false? The diatomic molecule of oxygen is made through a triple covalent bond.
Responda
- True
- False
Questão 16
Questão
True or false? Silica is a giant covalent macromolecule.
Responda
- True
- False
Questão 17
Questão
True or false? Metals do not form crystals because they are arranged in regular layers.
Responda
- True
- False
Questão 18
Questão
How can we describe the structure of a metal?
Responda
-
Simple molecule
-
Macromolecule
-
Giant lattice
Questão 19
Questão
What do metal atoms use to form metallic bonds?
Responda
-
Inner electron(s)
-
Neutron(s)
-
Outer electron(s)
Questão 20
Questão
True or false? Metals are strongly, electrostatically, attracted to the sea of delocalised electrons.
Responda
- True
- False
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