Chemistry Paper 1 - Atoms, Elements and Compounds
- Created by: Jmalik123
- Created on: 01-02-20 14:15
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- Atoms, Elements and Compounds
- Atoms
- Contains Proton, Neutrons and Electrons
- Proton - 1 - Charge +1
- Electron - Very Small - Charge -1
- Neutron - 1 - Charge 0
- The NUCLEUS contains protons and nuetrons
- An Ion is when numbers of protons don't equal to the numbers of electrons
- This means it has an overall charge
- 2- charge means the ion has 2 more electrons than protons
- This means it has an overall charge
- Atomic number and mass number
- Atomic number tells you the amount of protons
- Mass number tells you the total amount of protons and neutrons
- To find neutrons just subtract the two numbers
- Contains Proton, Neutrons and Electrons
- Compounds
- Are a substance formed from 2 or more elements
- When elements react, atoms combine with other atoms to form Compounds
- Difficult to separate the original elements
- Ionic Bonding
- A compound is formed from a metal and a non-metal
- Opposite charge of ions attract means they strongly attract to each other
- Metal lose electron - positive ion Non-metal gains electron - negative ion
- Covalent Bonding
- Each atom shares an electron with another atom
- A compound is formed between 2 non metals.
- Different properties
- Elements
- They can be represented by Symbols
- Consist of Atoms with the same atomic number
- Isotopes
- Have the same atomic number but DIFFERENT mass number
- Same number of protons but a different number of neutrons
- Substance made up of atoms that all have the same number of protons
- Atoms
- Move around the Nucleus in Shells (2,8,8,)
- Electron - Very Small - Charge -1
- Atomic number and mass number
- Atomic number tells you the amount of protons
- Mass number tells you the total amount of protons and neutrons
- To find neutrons just subtract the two numbers
- Elements
- They can be represented by Symbols
- Consist of Atoms with the same atomic number
- Isotopes
- Have the same atomic number but DIFFERENT mass number
- Same number of protons but a different number of neutrons
- Substance made up of atoms that all have the same number of protons
- Use a formula to work out the relative atomic mass
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