acidsandbases ppt 2 yr7
TRANSCRIPT
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ACIDS AND ALKALI
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Corrosive
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Acids The word “acid” means “sour” in latin.
Everyday examples: Lemon Juice (citric acid), vinegar, Hydrochloric Acid and Sulfuric Acid.
If a substance is an acid it is know as “acidic”
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Some acids are not corrosive and found in our food.
Example 1: Citric acid
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Example 2:Tartaric acid
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Example 3:Ascorbic acid
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Example 4:Methanoic acid
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Example 5:Hydrochloric acid
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Example 6:Lactic acid
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Example7:Uric acid
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What is the acid in vinegar?
Ethanoic acid. Also ethanoic acid is
produced from wine.
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But how can we get ethanoic acid from wine??
time Ethanol + Oxygen ethanoic acid If you want to speed the chemical reaction
leave the bottle opened.
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What are organic acids?
All acids of animal and plant origin including ethanoic acid are said to be organic acid EXCEPT hydrochloric acid
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What are mineral acids? They are not produced by living things. Geber ,chemist, discovered them . The first mineral was discovered
is :Nitric acid ,later they discovered sulfuric acid and hydrochloric acid.
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Uses of nitric acid: They use it to separate silver and gold
as it dissolve silver but does not dissolve the gold.
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Alkalis Opposite of acids. Equally as corrosive and dangerous as
acids. Alkalis are soluble in water”
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How would you know if a substance is an acid or a base? The LITMUS test (Indicator Test)
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How would you know how strong an acidic or a base is? pH scale. What does pH stand for? What does pH mean?