Acids And Alkalis Key Words (ms Assari) Flashcards
Acid
a substance that has a pH lower than 7
Corrosive
a substance which reacts with materials and makes them dissolve
Irritant
something that reddens the skin
Hydrogen
the atom present in all acids
Alkali
a soluble base that has a pH higher than 7
Soapy
the effect produced when an alkali is added to water
Hydroxide
the particle present in alkalis
Indicator
a dye that can change colour when placed in environments with different pH values
Litmus
an indicator which tells us if something is an acid or an alkali
Neutral
When a substance is neither acidic or alkaline
Strong acid/alkali
Contains a lot of hydrogen ions/ particles (acid) or a lot of hydroxide ions / particles (alkalis)
Week acid/ alkali
contains only a few hydrogen particles / ions (acid) or a lot of hydroxide particles / ions (alkali)
Universal Indicator
a mixture of dyes which create a range of colour depending on the strength of acidity or alkalinity being tested
pH number
The scale from 1-14 which shows acidity or alkalinity
neutralisation
When an acid and alkali combine resulting in products with pH 7