Chap 6 Flashcards
Properties of acids and akalis
-pH value
-taste
-corrosiveness
-Effect on blue litmus paper and red litmus paper
-reaction with metals
State the properties of Acid
-pH value less than 7
-tastes sour
-corrosive
-turns blue litmus paper red
-reacts with metals to produce hydrogen gas
State the properties of Alkali
-pH value more than 7
-tastes bitter
-corrosive
-turns red litmus paper blue
- does not react with metals
When do acids and alkais only show their properties?
Only when in the presence of water
WHat’s the meaning of pH?
potential hydrogen
Substances that contain acids are known as
acidic substances
Substances that contain alkaline are known as
alkaline substances
The characteristic of diff substances can be determined using a
suitable indicator
What is an indicator
-a colouring or a mixture of diff colourings that changes colour based in the substance tested
Name types of indicator
-phenolphthalein
-universal indicator
-methyl orange
-blue litmus paper
-red litmus paper
what is pH scale for
show the strength of acids and alkalis
Whats the range of ph value
between 0 to 14
The lower the ph value, the
stronger the ________
acid
the higher the ph value, the stronger the ___________
alkali
Acids and alkalis can be used in multiple sectors such as:
agricultural
industrial
medical
