Mock Test in Chemistry 9

1-2. Translate the following word equation into skeleton equation.

When dissolved magnesium fluoride reacts with dissolved lithium chlorate in water, aqueous magnesium chlorate and lithium fluoride powder are made.

3-4. Balance the chemical equation

MgF2 + LiClO3 ---> Mg(ClO3)2 + LiF

5-6. Balance the following chemical equation and draw the bonding/ Lewis dot structure of the ionic compound in the given equation

  Ca + N₂ —-->  Ca₃N₂

7. What is the mole ratio of Ca and Ca₃N₂? Please balance this first Ca + N₂ —-->  Ca₃N₂

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8. Give an element that belongs in Group 6 and Group 7 then show the sharing of electrons.

9-10. Refer to the given word reaction below:

Solid Sodium chloride reacts with oxygen gas to yield Sodium chlorate

Write the balanced chemical equation and mole ratio among the compounds in the equation above.

11-12.  What is the compound that will form when Magnesium combines with Oxygen? Write the chemical formula and chemical name.

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13-15. What is the name of the best metal that produces electricity? Why do we use copper in cable wires instead of that?

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16-17. Write one example of an alloy and give its uses.

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18-20. What group does Hydrogen belong to? Why was it placed there?

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