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4 Cards in this Set
- Front
- Back
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Why do ionic substances have a high melting point? |
It is an ionic lattice, strong electrostatic forces of attraction between oppositely charged ions requires a lot of energy to break. |
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Why are ionic substances good conductors of electricity? |
They don't conduct as solids only as liquids or in solution since the ions are free to move. |
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Why do covalent molecules have low melting points? |
Weak intermolecular forces so small amounts of energy are needed to overcome them. |
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What can nanoparticles be used for? |
Sun screen, face creams, tan creams, deodorants. Catalysts as well. |
