Across
- 4. Emission of energy
- 8. Moving a body, changing position in space
- 10. Which can happen at every moment or everywhere with hazard
- 11. A small amout of something used for experiments
- 13. a cylindrical glass container for laboratory use
- 16. positively charged centre of the atom consisting of protons and neutrons
- 18. Very shiny white metal, liquid at room temperature. Also used for termometers
- 19. to pick up and hold apparatus
- 21. Property of unstable nuclei to spontaneously lose mass by emitting particles or electromagnetic radiation.
Down
- 1. form of energy for domestic or industrial use
- 2. a tube wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening
- 3. to measure the mass of something
- 5. elements with the same atomic number but with different atomic mass
- 6. Relating to heredity, genes
- 7. particle of a chemical element that forms the smallest amount that can combine
- 9. a form or a way that something keeps repeating
- 12. a straight line coming from a light center
- 14. Said of a soil whose pH is lower than 6.5
- 15. used to withdraw and measure volumes of solutions in titrations
- 17. Very small infectious agent, which can only reproduce by parasitizing a cell.
- 20. Phenomenon by which a body undergoes the attraction of the Earth