Chemical analysis Flashcards
How to test for hydrogen
Burning splint
What is the positive result when testing for hydrogen
‘pop’ sound
How to test for oxygen
Glowing splint
What is a positive result when testing for oxygen
re-lights the splint
What the test for chlorine
Litmus paper (damp)
What is the positive result when testing for chlorine
Bleaches is the paper white
What is the test for carbon dioxide
Lime water
What is a positive result when testing for carbon dioxide
Goes cloudy as sodium calcium carbonate forms
pure substances
A pure substance is a single element or the compound not mixed with any other substance
Pure substances melt and boil at ….. temperatures
specific
Can be used to distinguish pure substances from impure substances
Heating graphs
what does a graph with the melting point of a pure substance look like
straight lines
what does a graph with the melting point of a impure substance look like
curved line
Formulation
The Formulation is a mixture that has been designed as a useful product
How are formulations made
By mixing chemicals that have a particular purpose in careful Quantities
