Chemistry Topic 1
- Created by: GCSE165
- Created on: 12-02-18 21:03
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- Chemistry Paper 1
- Atomic Structure
- Elements are arranged in order of their atomic number in the periodic table.
- Atomic number (proton number) of an element is equal to the number of protons in the nucleus of an atom
- Nucleus of an atom is made from protons and neutrons giving them a positive charge overall.
- Chemical Equations
- Symbol equations should always be balanced
- The mass of the reactants are equal to the mass of the products
- Atoms get re-arranged o chemical equations
- Forming Bonds
- The formula of a molecule shows the number of atoms in the molecule
- Compounds of non-metals have covalent bonds
- Compounds of metals bonded to non-metals have ionic bonds
- The formula of an ionic compound shows the simplest ratio of ions
- Atomic Structure
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