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3. 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”
4. Some acids are not corrosive and
found in our food.
Example 1: Citric acid
11. What is the acid in vinegar?
Ethanoic acid.
Also ethanoic acid is
produced from wine.
12. 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.
13. What are organic acids?
All acids of animal and plant origin
including ethanoic acid are said to be
organic acid EXCEPT hydrochloric acid
14. 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.
15. Uses of nitric acid:
They use it to separate silver and gold
as it dissolve silver but does not dissolve
the gold.
16. Alkalis
Opposite of acids.
Equally as corrosive and dangerous as
acids.
Alkalis are soluble in
water”
17. How would you know if a
substance is an acid or a base?
The LITMUS test (Indicator Test)
18. How would you know how
strong an acidic or a base is?
pH scale.
What does pH stand for?
What does pH mean?
