Atomic Structure and Bonding

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  • Created by: Emily1
  • Created on: 20-06-13 20:08
Why do ionic compounds have high melting and boiling points?
Ionic compounds have high melting and boiling points because there are strong bonds between their ions.
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In what physical state or states do ionic substances conduct electricity?
liquid or dissolved in water
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When a substance with a simple molecular structure boils, which bonds are broken?
When a molecular substance boils, the bonds broken are intermolecular bonds.
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Name a statements that is true of substances with a simple molecular structure?
Substances with a simple molecular structure have low melting points and do not conduct electricity.
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Why are metals good conductors of electricity?
.Metals are good conductors of electricity because they contain electrons that are free to move.
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What is the approximate size of a typical nanoparticle?
50 nm
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How many nanometres are there in a metre?
There are one billion nanometres in a metre.
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Why are titanium dioxide nanoparticles used in sunblock creams?
They block ultraviolet light but do not reflect visible light.
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Other cards in this set

Card 2

Front

In what physical state or states do ionic substances conduct electricity?

Back

liquid or dissolved in water

Card 3

Front

When a substance with a simple molecular structure boils, which bonds are broken?

Back

Preview of the front of card 3

Card 4

Front

Name a statements that is true of substances with a simple molecular structure?

Back

Preview of the front of card 4

Card 5

Front

Why are metals good conductors of electricity?

Back

Preview of the front of card 5
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