1. Why does lemon prevent the browning of apples? When browning of apples is caused by a reaction wi...(more)
  2. I am doing a research project on the strength of different batteries. Is there a cheap way to te...(more)
  3. Is there a way to make a simple smoke bomb that isn't poisonous or harmful? How would I be able t...(more)
  4. Do you know of any analysis or test data available to show that aluminum will not spark if struck...(more)
  5. This question is in regard to ‘vintage Lucite purses’ that sometimes end up having an odor (m...(more)
  6. In my recent science project, I tried discharging batterys in the freezer, fridge and room. The r...(more)
  7. What is the heat wanted to melt the hardest substance in the world? (more)
  8. Why does vitamin C not work as well if it has been heated? I know it is an acid. Does it turn in ...(more)
  9. Water is made up of H2O. H will burn and O2 will burn. Why does water not burn? (more)
  10. When seperating hydrogen and oxygen from water by using electricity is there a safe way to contai...(more)
  11. Why is it that a difference in the number of electrons in an atom makes a completely different ki...(more)
  12. I have been doing an experiment in school and I don't understand why the following happens. When ...(more)
  13. How do you find the solubility of a substance? (more)
  14. I'm doing a science report on Arsenic and i was wondering do you know what is the meaning of the ...(more)
  15. My question: How will they produce plastics, tires, roads or anything that is made from oil, onc...(more)
  16. Hi, I am looking for a procedure that I can use for a science investigation. We are testing wate...(more)
  17. What is the reaction between a chitin--the polysaccharide intermediate between protein and carboh...(more)
  18. How long does it take for alcohol to be detected through the skin after your first drink? Is the...(more)
  19. Where does the energy in freezing water come from? When water freezes, its volume increases so th...(more)
  20. I am really interested in chemistry and I was wondering where I would be able to purchase some of...(more)