chemical analysis Flashcards
What is a pure substance in chemistry
A single element or a single compound
What is a pure substance in everyday life
A substance that has nothing added to it
What is an example of a pure substance in chemistry
Copper wire
What is an example of a pure substance in everyday life
Water ( no juice added )
How can water be tested to show it’s pure
Measure the boiling or melting point
What is the boiling point
100*C
What is the melting point
0*C
What gas burns rapidly with a squeaky pop
Hydrogen
What has relights a glowing splint
Oxygen
What gas turns limewater cloudy
Carbon dioxide
What has turns damp litmus paper white
Chlorine
What is a formulation
A mixture that has been designed as a useful product
How are formulations made
By mixing components in measured quantities to ensure the product has required properties
What are some examples of formulations
Fuel , cleaning agents , paints , medicine , fertilizers , food
What does qualitative mean
Test based on observation ( words )
What does quantitative mean
Test based on numerical measurements ( numbers )
