C4 - Chemical Patterns.
- Created by: dmistry02
- Created on: 10-06-14 09:44
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- C4 - Chemical Patterns.
- Atoms
- The Nucleas
- middle of the atom
- Consists of protons and neutrons
- Positively charged
- tiny compared to the rest of the atom
- Electrons
- around the nucleas
- negatively charged
- No mass
- Arranged in shells
- 2 is maximum on the first shell
- 8 is maximum on other shells
- Protons = Electrons.
- Identifying Atoms
- Elements emit colour when heated.
- Lithium - Red
- Potassium - Lilac (purple)
- Sodium - yellow/orange
- Line Spectrum
- Due to electron arrangement.
- Different wavelengths
- shown through a spectroscope.
- Elements emit colour when heated.
- The Nucleas
- Periodic Table
- History
- Dobereiner
- organised into triads (into 3's)
- In order of atomic mass
- Middle had the average atomic mass.
- Newlands law
- every 8th element had a similar property
- Didnt leave gas for missing elements.
- He mixed up metals and non-metals.
- Mandeleev
- In order of atomic mass but leaving gaps
- used Dobereiner's and newlands law
- Dobereiner
- Modern
- Separates metals from non-metals
- Arranges in groups and periods
- groups
- similar properties
- how many electrons on the outer shell
- columns
- Periods
- How many shells.
- Reactivity
- groups
- Group 1 - Alkali metals
- One outer shell electron
- shiny when freshly cut
- More reactive as it goes down
- energy needed to separate the electron from the atom
- reaction with cold water produces hydrogen gas
- Reaction with chlorine produces salt.
- Group 7 - Halogens
- 7 outer electrons
- Non-metals
- become less vigorous when going down the group.
- Less energy is needed to gain the electron.
- Reaction with alkaline metals produce metal halides
- Produce halides - iron halide.
- History
- Atoms
- Ions
- C4 - Chemical Patterns.
- Atoms
- The Nucleas
- middle of the atom
- Consists of protons and neutrons
- Positively charged
- tiny compared to the rest of the atom
- Electrons
- around the nucleas
- negatively charged
- No mass
- Arranged in shells
- 2 is maximum on the first shell
- 8 is maximum on other shells
- Protons = Electrons.
- Identifying Atoms
- Elements emit colour when heated.
- Lithium - Red
- Potassium - Lilac (purple)
- Sodium - yellow/orange
- Line Spectrum
- Due to electron arrangement.
- Different wavelengths
- shown through a spectroscope.
- Elements emit colour when heated.
- The Nucleas
- Periodic Table
- History
- Dobereiner
- organised into triads (into 3's)
- In order of atomic mass
- Middle had the average atomic mass.
- Newlands law
- every 8th element had a similar property
- Didnt leave gas for missing elements.
- He mixed up metals and non-metals.
- Mandeleev
- In order of atomic mass but leaving gaps
- used Dobereiner's and newlands law
- Dobereiner
- Modern
- Separates metals from non-metals
- Arranges in groups and periods
- groups
- similar properties
- how many electrons on the outer shell
- columns
- Periods
- How many shells.
- Reactivity
- groups
- Group 1 - Alkali metals
- One outer shell electron
- shiny when freshly cut
- More reactive as it goes down
- energy needed to separate the electron from the atom
- reaction with cold water produces hydrogen gas
- Reaction with chlorine produces salt.
- Group 7 - Halogens
- 7 outer electrons
- Non-metals
- become less vigorous when going down the group.
- Less energy is needed to gain the electron.
- Reaction with alkaline metals produce metal halides
- Produce halides - iron halide.
- History
- Atoms
- Produces when gaining or losing an electron
- They have charges
- Ionic bonding
- transferring electrons
- bonding of 2 opposite charged ions
- Group 1 reacts with Group 7
- form a lattice
- Each lattice forms a crystal
- conduct when molten or dissolved
- free electrons
- C4 - Chemical Patterns.
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