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Metallic Bonding and Bonding Summary
If struggling with questions on metallic bonding watch this video:
https://www.youtube.com/watch?v=Zqd5Oz57J-0
The next 4 videos cover the double page spread in the workbook that summarises the whole of bonding. Have a look at these if struggling with the bonding summary questions.
https://www.youtube.com/watch?v=vrH4bEU6Du8
(start of ionic)
https://www.youtube.com/watch?v=w9Ap6-Ws2nw
(rest of ionic and start of covalent)
https://www.youtube.com/watch?v=y1F1Tu4tP_o
(properties of covalent substances and giant molecular)
https://www.youtube.com/watch?v=BBIOdJ1mS5o
(metallic)
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Option 1
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Describe metallic bonding.
1 point
A regular arrangement of anions surrounded by delocalised electrons.
A regular arrangement of cations surrounded by delocalised electrons.
An irregular arrangement of anions surrounded by delocalised electrons.
An irregular arrangement of cations surrounded by delocalised electrons.
Clear selection
Which statement is correct?
1 point
Metals conduct in the liquid state because they have ions that are free to move.
Metals don't conduct because the electrons are attracted to the ions.
Metals conduct because there are ions that are delocalised.
Metals conduct because they have delocalised electrons.
Clear selection
Which statement is correct?
1 point
Metals have high melting points because the positive metal ions attract the surrounding negative electrons. It therefore takes a lot of energy to separate them.
Metals have high melting points because the metal ions are strongly bonded. To break the bonds takes a lot of energy.
Metals are made of positive and negative ions that are strongly attracted. It therefore takes a lot of energy to separate the oppositely charged ions.
Metals have low melting points because the ions are not held in place by bonds only attractive forces. It doesn't take much energy to separate the ions as they all have the same charge.
Clear selection
Which of these statements about simple molecular substances are correct?
1 point
Simple molecular substances have low boiling points because covalent bonds are weak and therefore easily broken. This only requires a little energy.
Simple molecular substances have low boiling points because covalent bonds are formed by sharing electrons. These electrons repel each other pushing the molecules apart.
Simple molecular substances have low boiling points because simple molecules are not charged. Molecules are therefore not attracted to one another so only require a little energy to separate them.
Simple molecular substances have high boiling points because the covalent bond is strong. it takes a lot of energy to break the bonds.
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Which of the following is correct about calcium chloride?
1 point
A
B
C
D
Clear selection
1 point
A
B
C
D
Clear selection
Which is the correct formula of aluminium nitride?
1 point
A
B
C
D
Clear selection
1 point
A
B
C
D
Clear selection
1 point
A
B
C
D
Clear selection
1 point
A
B
C
D
Clear selection
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