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Atoms and Molec...

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  • Question 1
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    Cations carry  a  ___________ charge. 

  • Question 2
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    The word 'atom' is derived from the Greek word ____________.

  • Question 3
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    Molecular mass of $$Ca(OH)_2$$ is :

  • Question 4
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    What is a molecule?

  • Question 5
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    Which one of the following scientist's proposed the law of conservation of mass?

  • Question 6
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    State the atomic mass of $$H_2O$$?

  • Question 7
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    Hydrogen atom has an approximate diameter of:

  • Question 8
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    Gold is an example of a

  • Question 9
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     A symbol of an element represents:

  • Question 10
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    When equal masses of methane and sulphur dioxide are taken, then the ratio of their molecules is:

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