Top answers

What is an isotope?

An isotope is an atom of the same element, but with a different number of neutrons. Hence, it has the same atomic number but a different mass number.
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Answered by James I. • Chemistry tutor
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Explain how the properties and structure of solid salt change when it dissolves in water

When a salt is solid it forms a a crystaline structure and a fixed ionic lattice. This means the ions are stationary and cannot move in the solution and therefore is unable to conduct electricity. However, w...
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Answered by Lara E. • Chemistry tutor
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Can you explain the properties of a giant covalent lattice?

It is really important to note here that there are no intermolecular force of attraction between the molecules, compared to simple covalent molecules. There are only strong covalent bonds which means that gi...
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Answered by Nishi M. • Chemistry tutor
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Explain why, when a reversible reaction reaches equilibrium, the reaction appears to have stopped.

The forward and backwards reaction have the same rate so there is no overall change in the quantity of reactants and products.
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What are the properties of ionic compounds?

As you may know, ionic compounds are composed of electrostatic forces of attraction between oppositely charged ions. This means that there are no free moving ions in the compound, as they have all been bonde...
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Answered by Shan H. • Chemistry tutor
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