Chemistry
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Covalent bonding | show 🗑
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Covalent bonding is shown by | show 🗑
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Ionic bonding | show 🗑
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Metallic bonding | show 🗑
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show | Good conductors due to sea of delocalised electrons
Tough as lattice layers can easily slide over one another
Malleable and ductile as lattice layers can move
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show | A giant covalent structure.
4 bonds to each carbon resulting in a high m.p and b.p
Insoluble in water
Not conductible as no free electrons
Very strong as formed under lots of pressure and high temperatures
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show | 3 strong covalent bonds around each carbon so one delocalised electron.
Hexagonal layers held together by delocalised electrons
Weak inter-layer forces
High m.p and b.p
Layers can slide over each other so a lubricant
Conducts due to electron
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Silica | show 🗑
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Giant Ionic structures | show 🗑
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show | Strong covalent bonds between atoms but weak intermolecular forces
Often liquid and gases
No free electrons so don't conduct
Do not dissolve in water
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Alloys | show 🗑
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show | 1-100 nm small
Antimicrobial- Nano silver so used for medical stuff
Absorbs UV rays but stays transparent- Nano zinc oxide
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Bucky balls | show 🗑
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Graphene | show 🗑
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Fullerene | show 🗑
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show | -High conductivity-> micro electronics
-Strength -> Building materials enhancing
- High tensile strength-> Wires
- Light-> Overhead cables, sports equipment
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Pros and Cons of nanotechnology | show 🗑
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Shape memory polymers | show 🗑
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Shape memory alloys | show 🗑
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Thermochromic dyes | show 🗑
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show | Changes colour with light
Uses- T-shirts and glasses to sunglasses
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show | Low melting point to be easily moulded
Uses- Gumshields
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show | Can shrink and swell by holding lots of water in it's polymer chains. Also responds to temperature and pH
Uses- nappies, absorbing toxic spillages
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show |
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Zoe 1
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