What can be made from a pig's liver, detergent and hydrogen peroxide?
A group of aspiring scientists used these materials to create a simulated volcano.
Last week, 120 students from 19 primary schools learned to conduct experiments at the University of Hong Kong.
They were guided by a group of secondary students at the workshop, which was organised by the Joint School Science Exhibition Preparation Committee.
The activity was aimed at teaching students to put into practice the scientific concepts they have learned at school.
The 20 secondary students prepared for the workshop by looking up information in books and on the internet.
The students decided to use a protein enzyme from pigs' livers to separate hydrogen peroxide into oxygen and water. They then added detergent and pigments.