Physics revision help.

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  • Physics
    • Atoms
      • All substances are made from atoms. Each atom is made of a nucleus - containing protons and neutrons - surrounded by electrons.
      • The atomic number is the number of protons in an atom. The elements are arranged in the periodic table in ascending order of atomic number.
      • 1 x 10-10m  = 0.0000000001m
    • Density
      • density (kg/m3) = mass (kg)/ volume(m3)
      • Not all objects have regular volumes that are easy to measure. A ‘eureka can’ can be used in these cases.
    • Change of state
      • The temperature of the substance does not change during melting, boiling or freezing, even though energy is still being transferred.


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