Fundamental
- Created by: Hannah
- Created on: 06-12-12 18:50
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- Fundamental ideas
- Atoms
- Each element is made of only one atom
- Atoms have a tiny nucleus surrounded by electrons
- Compounds are formed when two or more elements combine together
- Atomic Structure
- The nucleus of an atom contains two types of particles
- Protons
- Have a positive charge
- Neutrons
- Has no charge
- Protons
- Electrons
- Protons
- Have a positive charge
- Number of protons is equal to the number of electrons and their changes are equal and opposite
- Protons
- Atomic number of an element is equal to the number of protons in the nucleus of its atom
- No of protons = atomic number
- No of electrons = No of protons
- No of protons = atomic number
- No of neutrons = mass number - atomic number
- No of electrons = No of protons
- No of electrons = No of protons
- The nucleus of an atom contains two types of particles
- Forming bonds
- Compounds of metals bonded to non-metal have ionic bonds
- The formula of an ionic compound shows the simplest ratio of ions
- Compounds of non-metals have covalent bonds
- The formula of a molecule shows the number of atoms in the molecule
- Chemical epuations
- Atoms get re-arranged in chemical reactions
- =The mass of the products is equal to the mass of reactants
- Symbol equations should always be balanced
- When symbol equations are written they should always be balanced
- Atoms
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