Across
- 3. pH less than 7
- 5. through galvanisation
- 6. way a chemical behaves when combined with another substance
- 7. smallest living part of an animal or a plant
- 8. that protects us from uv rays
- 11. type of rain
- 12. person who studies or is an expert in physics
- 13. of the parts inside your body that have a particular function
- 14. scientific test that is done in order to get proof of something or new knowledge
- 15. water in the form of droplets that have condensed from atmospheric water vapor
- 16. measure of the rate at which work is done
- 18. salt water that covers large parts of the surface of the earth
Down
- 1. something that is not necessary
- 2. where experiments are done
- 4. soft & silvery white or grayish metal in Group 14
- 5. work undertaken to increase the stock of knowledge
- 9. examination of your body by a doctor to check your state of health
- 10. resistance between two points of a conductor
- 16. an award
- 17. unit of electrical power