GCSE Chemistry Unit 2

Chemistry Unit 2, GCSE questions

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  • Created by: Lola
  • Created on: 22-05-12 21:07

1. What is an Isotope?

  • an atom with a charge
  • atoms of the same element with the same number of protons, different number of neutrons
  • atoms of the same element with the same number of neutrons, different number of protons
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2. Electrolysis is:

  • the splitting or decomposing of substances using electricity
  • the splitting or decomposing of a substance with electrons

3. A Nano-particle is one that is really small, true or false?

  • True
  • False

4. The properties of graphite are:

  • Each carbon atom has three bonds, made up of layers that can slide over each other, allowing the conduction of electricity
  • Each carbon atom has three bonds, it has a lattice structure in layers with a low melting and boiling point
  • Each carbon atom has four bonds, made up of layers that can slide over each other and allow the conduction of electricity

5. Ionic bonding is:

  • The loss or gain of electrons
  • The sharing of electrons between elements
  • The loss or gain of ions between electrons
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Comments

Jemima

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Meant to click 4 not 3 stars! helpful test :)

Nuha

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Good! However, for question 15, high temperatures don't favour the forward exothermic reaction because a high temp in exothermic reactions gives a low yield

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