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| W2.1
HYDROCHLORIC ACID AND MAGNESIUM |
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LINKS |
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Unlike
calcium, magnesium will not react with cold water. Watch what
happens with hydrochloric acid solution, then try to answer
the questions:
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Think for Yourself... |
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What tells you
there is a chemical reaction? 
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What is the new
substance in the gas state? Explain
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Is this the only
new substance?
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Why can't you see
any other new substances? Remember, hydrochloric acid
is a solution in water.
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Why does the same
thing happen to the second lump of magnesium?
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Suppose you keep on adding more
magnesium. When would you know you had added enough
to react with all of the hydrochloric acid?
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How could you find
out what was dissolved in the water?
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| a
Science Enhancement Programme CD-ROM 2005 |
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user
guide |
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