Structures and Properties GCSE Chemistry AQA (higher)

C2.2 in the AQA book.
This quiz has 35 questions on practically every sentence in that chapter.

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Ionic Compounds are have what?
Giant structures
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Ionic compounds have...
High melting and boiling points
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A...................amount of energy is needed to overcome the ionic bonds
large
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Ionic compounds are............at room temperature?
Solids
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Can Ionic compounds conduct electricity?
When they are melted or dissolved in water
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Can ionic substances dissolve in water? If yes, why?
Yes, water molecules can split up the lattice
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Atoms in molecules are held together by what?
Strong covalent bonds
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Substances made of.......have low melting and boiling points?
Simple Molecules
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Covalent bonds are what?
Strong
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Covalent Bonds act between.......
Atoms within the molecule
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Forces of attraction between molecules are what?
Intermolecular forces
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Intermolecular forces are what?
Weak
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When a molecular substance melts or boils.....
Intermolecular forces are overcome
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Substances made of small molecules have what?
Low melting and boiling points
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Why is Oxygen a gas at room temperature?
Because it is a simple molecule
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Why does Petrol not conduct electricity?
Because it has no overall charge
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Covalent structures are sometimes called what?
Macromolecules
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What are covalent bonds?
when atoms share electrons
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Covalent structures have.............melting and boiling points
high
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What elements/compounds have hard and transparent structures?
Carbon and silicon dioxide
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Why can we change the shape of metals?
because they are arranged in layers and can slide over each other eaily
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Does Graphite conduct electricity?
Yes, it has free electrons
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Why is graphite slippery?
It has weak forces between the layers
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What holds atoms in place in giant metallic structures?
delocalised electrons
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How do metals conduct electricity?
through delocalised electrons
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What are delocalised electrons?
free electrons
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What allows metals to conduct heat?
free electrons
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How many atoms are there in a nanoparticle?
between 200 and 500
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Nanoparticles have......surface areas
large
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Name two uses for nanotechnology.
To make drugs more effective and to make efficient catalysts
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Why do nanoparticles have different properties to ordinary materials?
Because they are smaller and have a larger surface area
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How are the carbon atoms bonded in graphite?
They are covalently bonded in flat sheets
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What is nanotechnology?
Use of nanoparticles in technology
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Was this a good quiz? (there is only one right answer ;) )
Superduperfabulous!
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Other cards in this set

Card 2

Front

Ionic compounds have...

Back

High melting and boiling points

Card 3

Front

A...................amount of energy is needed to overcome the ionic bonds

Back

Preview of the front of card 3

Card 4

Front

Ionic compounds are............at room temperature?

Back

Preview of the front of card 4

Card 5

Front

Can Ionic compounds conduct electricity?

Back

Preview of the front of card 5
View more cards

Comments

Leslie

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A fantastic quiz! Very helpful for my revison!! :)

Some like it hot

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I'm very glad it helped :)

Former Member

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thank you!  this quiz is Superduperfabulous :D

Some like it hot

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If I could like your comment, Ritika, i would XD

Jayne Martin

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Thanks for all your quizzes! :)

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You're welcome!! It's useful making them :P

(& i like reading the comments :3 ) 

:) PurpleJaguar (: - Team GR

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This is a really helpful, it must've taken you ages to make :)

Thanks! :):)

anum

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awesome quiz 

its helped a lot with my revish, considering i have a chem exam on monday :(

thanks :P

halima

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awsome quiz helped alot

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