Acids And Alkalis Flashcards
(23 cards)
Acids have a pH of less than…
7
Bases have a pH of more than…
7
Difference between a base and an alkali?
Alkalis are just bases dissolved in water
Salts are made when an acid reacts with a…
Base, carbonate or metal
What colour does acid turn blue litmus paper?
Red
What colour does universal indicator turn with acid?
Red
What colour does an alkali turn universal indicator?
Blue
What colour does universal indicator turn with a neutral substance?
Green
What is produced when you dissolve acids in water?
Hydrogen ions, H+
What does (Aq) mean?
The substance is IN water
What is produced when Alkalis are dissolved in water?
Hydroxide, OH-
What’s the neutralisation reaction?
H+(aq) + OH-(aq) –> H20
In a precipitation reaction, ions collide with one another to form…
An insoluble product. This is the precipitate.
What is hydrochloric acid?
HCL
What is nitric acid?
HNO3
Hydrogen peroxide
H2O2
Sodium hydroxide
NaOH
Potassium hydroxide
KoH
What is dissociation?
When a H-Cl molecule splits into H+ and Cl- ions
Or
NaOH becomes Na+ and OH- ions
How do you test for hydrogen gas?
Squeaky pop test
How do you test for carbon dioxide?
Co2 turns limewater cloudy white
What is effervescence?
Bubbly, fizzy
What are spectator ions?
Present in reaction but don’t form the precipitate
