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СОЧ 2 ЧЕТВЕРТЬ

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  • What is the complex substance?
  • Who is Democritius? What did he do for science?
  • Is Hydrogen peroxide complex or simple substance ?
    complex
  • …………….. and ………………….. are found in the nucleus
    proton and neutron
  • Nucleus
    ядро
  • The charge of a neutron is
    neutral
  • indivisible
    неделимый
  • Solution
    раствор
  • Electrons turn around the
    nucleus
  • Is silver complex or simple substance ?
    simple
  • The charge of the electron is
    negative
  • Conductor
    проводник
  • Citric acid
    лимонная кислота
  • Explain what you understand by the term isotopes. Give an example.
    different number of neutrons but same protons
  • Is Carbon complex or simple substance ?
    simple
  • The subatomic particles are ………
    neutron, proton, electron
  • Lactic acid
    молочная кислота
  • Vinegar
    уксус
  • What is the simple substance?
  • Formic acid
    муравьиная кислота
  • Combustion
    горение
  • Is juice complex or simple substance ?
    complex
  • Brittle
    хрупкий
  • The charge of the proton is
    positive
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