This activity involves the surprising neutralization reactions between the carbonic acid that forms when the carbon dioxide in one’s breath reacts with water and calcium hydroxide.
Prior to Thomson’s work it was thought that the atoms of each element were unique, invisible particles, or that atoms were made of subatomic particles that had significant mass compared to the atom... read more
Categories: Teacher Demonstration
This demonstration is a dramatic look at the influence of the atmospheric pressure and the relationship of pressure and temperature of a gas. A burning piece of paper is inserted in a bottle and an... read more