Chemistry
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Last updated 12:32 AM on 8/22/26
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8 Terms
1
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Iron
Fe3+
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Zinc
Zn2+
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Copper
Cu+
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Write a word equation for aluminium metal and HCI
Aluminium + hydrochloric acid arrow aluminium chloride + hydrogen
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Write a balanced equation
2Al + 6HCl → 2AlCl₃ + 3H₂
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Whats an exothermic reaction
An exothermic reaction is a chemical reaction that releases heat energy to the surroundings.
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Why didn’t sodium chloride + copper sulfate not precipitate
A precipitate only forms when one of the new products is insoluble in water therefore no precipitate formed because both products are soluble in water and remain dissolved.
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Why didn’t sodium chloride + cobalt chloride not precipitate
no precipitate forms because everything stays dissolved in the water.