what will happen when
a. magnesium oxide is tested with blue litmus paper?
b. zinc is reacted with steam and a burning matchstick is brought close to the mouth of the test tube?
c. phosphorus is taken out of water?
d. iron is combined with dilute hydrochloride acid?
Answers
Answer:Detailed Explaination
Explanation:
a)Magnesium oxide changes the colour of red litmus paper to blue. This reaction shows that magnesium oxide is basic in nature. The formation of magnesium oxide is a direct combination reaction of two elements: magnesium and oxygen.
b)When a burning machstick brings to it, it will produce a pop sound because hydrogen gas will released.
c)When there is too much of it in water, it can speed up eutrophication (a reduction in dissolved oxygen in water bodies caused by an increase of mineral and organic nutrients) of rivers and lakes. ... A sign of this is excess algae in the lake.
d)When dilute Hydrochloric acid is added to iron filings, iron(II) chloride & hydrogen gas is produced. In this reaction iron displaces hydrogen from hydrochloric acid to form iron chloride & hydrogen gas this reaction is a single displacement reaction.
Answer:
The 2 metals are copper and Tin
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