Multi-word fill quiz Q2 "Using Chemistry" © Doc Brown's KS3 chemistry

Select answer from drop-down menu for any gap. When completed click on CHECK
   2      C      carbon      chlorate      combustion      dioxide      energy      exothermic      fuels      O      potassium      S      sulfur   
1. Apart from burning for energy there are other everyday situations involving .
2. These reactions release lots of heat and are described as reactions.
3. For example the composition of a match head mixture is shown in the table below.
componentsymbol/formula
potassium chlorateKClO3
sulfurS
carbonC

The supplys the oxygen to burn the to carbon dioxide and the sulfur to .
balance3.gif4. Balance the symbol equations
+ O2 ==> C
S + 2 ==> O