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Thursday, September 23, 2021

Acids & Base

 Acid - A form of Chemical 

A acid contains Hydrogen atoms that can break off to react with a substance

Formulae

Hydrochloric Acid - HCl ( Little L )

Sulfuric Acid - H2SO4

Nitric Acid - HNO3

Phosphoric Acid - H3PO4

Acetic Acid - CH3COOH

Citric Acid - Lemon & Oranges 

Formic Acid - Poison in bee - sting 

Tartaric Acid

Where do you find Acids

Plaque - Acid on your teeth

Stomach Acid - Hydrochloric Acid

Battery Acid is Sulfuric Acid

Vinegar - Acetic Acid

Coca Cola has Carbonic Acid

Vitamin C has Ascorbic Acid

Litmus paper changes to red in acids and base turns it blue

What is a Base?

ROYGBIV

1 - 14 ( pH Scale )

0 - Acid

7 - Neutral 

14 - Base

Acid has hydrogen in it 

0-1 Red

2-3 Orange

4-6 Yellow

7 Green

8-10 Blue

11-12 Indigo

13-14 Violet

pH - Potential of Hydrogen

pH is the log of the hydrogen concentration - Log is a mathematics term for counting how many points / zeros there are

Base is opposite chemical to an acid

A base contain Hydroxide - An acid contain Hydrogen 

H ( Acid ) OH or -OH ( Base )

HOH ( H2O ) - Water

Acid and Base neutralise each other and make water


Discussion

Red cabbage contains pigment that can dissolve in water called anthocyanin ( anthocyanin is a pigment found in red,purple and blue flowers and mostly fruit ) and changes colour when it is mixed with an acid or base, the pigment turns red around acidic environment with a pH less than 7 and pigment that turns blue / greenish is in alkaline environments which is also called a basic




   


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