As an introduction to chemical changes, we
produce O2 and H2 gas in a plastic bag. We
activate the mixture with a match, and BOOM,
a tiny amount of H2O is produced.
Here, Ray has the match and Heidi is the one with the
H2 & O2. Even though the bag isn't very
big, the explosion was one to remember!
Reactions that produced the gases:
Zn+HCl==>H2+ZnCl2
H2O2+MnO2==>H2O+O2+MnO2
The explosion reaction:
H2+O2==>H2O