Chemitry C2
- Created by: neeza158
- Created on: 20-10-21 17:00
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- ionic bound
- Chemistry-C2
- ionic compounds
- held together by strong electrostatic force of attraction between oppositely charged ions
- high melting and boiling point due to strong bonds between the ions which takes alot of energy to overcome
- Ionic compounds are made of charged particles called ions which form a giant lattice structureA lattice is a regular repeating arrangement of particles,
- dot and cross diagram
- covalent bonding
- share pair of electrons Weak intermolecular forces exist between individual molecules
- between non metals only
- low melting and boiling point
- dont conduct electricity as there are no charged ions theres no free electrons
- Giant covalent structures
- atoms bonded to each other by strong covalent bonds
- high melting and boiling point as a lot of energy is needed to break the covalent bonds
- dont conduct electricity as they dont contain charged particles
- Eg:Daimond
- each carbon atom forms 4 covalent bonds which makes diamond hard
- very strong and there are no intermolecular forces
- does not conduct electricity, has a very high melting point
- Graphite
- each carbon atom forms 3 covalent bonds
- conduct electricity hish melting point
- weak intermolecular forces, so the layers can slide over each other making graphite soft and slippery
- conduct electricity hish melting point
- each carbon atom forms 3 covalent bonds
- Grahpene
- One layer of graphite
- It has free electrons which can move along its surface allowing it to conduct electricity
- One layer of graphite
- Fullerenes
- molecules of carbon shaped likehollow balls
- have a huge surface area can help in industrial catalysts can form nanotubes
- molecules of carbon shaped likehollow balls
- polymers
- long chains of repeating units
- joined by strong covalent bonds
- more energy is needed to break them
- The intermolecular forces between the molecules in a polymer tend to be strong hence many of these substances are solid at room temperature
- more energy is needed to break them
- joined by strong covalent bonds
- long chains of repeating units
- metallic bonding
- high melting and boiling points alot of energy is needed to break the bonds
- conduct electricity -free electrons and can carry charge
- malleable and ductile Layers of positive ions can slide over one another
- conduct electricity -free electrons and can carry charge
- high melting and boiling points alot of energy is needed to break the bonds
- alloys
- mixture of 2 or more metals
- distortion of layers makes alloys harder
- mixture of 2 or more metals
- ionic compounds
- between metals and non metals
- metals lose an electron to become positively charged ions
- non metals gain electrons to become positively charged ions
- An ion is an electrically charged atom or group of atoms formed by the loss or gain of electrons
- The positive and negative charges are held together by the strong electrostatic forces of attraction between oppositely charged ions
- Chemistry-C2
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