Acids
An acid
What is a substance which is less than 7 on the pH scale that releases H+ ions?
A substance higher than 7 on the pH scale.
What is a base?
Base
What is a substance that releases OH- in water ad has a pH of 8-14?
Has a pH of 8
What is toothpaste?
Two types of indicators
What is _____ & _______
(Litmus paper and universal indicator/phenolphaline)
The products in a neutralisaition reaction
What is Salt + Water?
_____ + Acid --> Salt + Water
What is a base?
Neutralisation reaction
What is a reaction that occurs between an acid and base to produce water and a salt?
pH of 6
What is a sighlty acid solution (e.g., milk)?
Universal indicator
What is used to measure the hydrogenated ions in a solution?
Acid that does not fully dissociate
What is a weak acid?
Alkali
What is a base thats soluable in water?
Bases are effective at cleaning grease and dirt
Why do we use bases for cleaners?
The pH scale measures the concentration of hydrogenated ions in a substance.
What is the pH Scale?
Litmus paper that was blue turns red
What happens when acid is added to blue litmus paper?
What is Hydrochloric acid, Nitric acid and sulfuric acid?
NaOH(aq) + HCl(aq) --> ???
NaOH(aq) + HCl(aq) -->NaCl(aq) + H2O
Alkali metals
What is group one in the periodic table?
Yellow
What is the universal indicator colour of pH of 5-6?
Red-Orange-Yellow-Green-Light Blue-Dark Blue-Violet
What is the colour spectrum of the Universal Indicator in solution?
What is corrosion?
Hydroxide ion
What is the common ion in bases?
Our acidic solution becomes neutral pH
What happes when a acidic solution is neutralised
Decreasing pH from 10 to 7
What is adding an acid to neutralise the base?
Litmus paper shows acid and base of the liquid
Universal indicator shows intensity of the liquid
Why do we use universal indicator over litmus tests when we are testing colourless liquids?