6744015
Description
Mind Map by Sophie McDermott, updated more than 1 year ago
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Created by Sophie McDermott
over 7 years ago
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Chemistry C2
- Structures & Bonding
- An atom is made up of subatomic particles
- Protons
- Charge : +1
- Charge : +1
- Neutrons
- They have no charge
- They have no charge
- Electrons
- The first shell can hold 2 electrons
- The second & third shell can hold 8 electrons
- The forth shell can hold 18 electrons
- Charge : -1
- The first shell can hold 2 electrons
- Protons
- Ionic bonding
- When atoms gain or lose electrons
- Happens between a metal and a non-metal
- Ionic compunds are very strong because the positive and negative ions are attracted to each other
- Metal gets positive charged but the non metal gets negatively charged
- Have high melting and boiling points
- Soluable in water
- Bad conductors as solid
- When atoms gain or lose electrons
- Covalent bonding
- Between 2 non-metal
- Poor conductors
- Exist as liquid or gasses at room temperature
- Share electrons
- Low melting points
- All atoms gain a full outer shell
- Between the bonds are intermolecular forces which are very strong
- Between 2 non-metal
- Metallic bonding
- Between 2 metals
- There are free electrons
- Become positive charged
- Donate their electrons
- Very high boiling and melting points
- Good conductors
- Aren't very soluable
- Between 2 metals
- An atom is made up of subatomic particles
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