Across
- 2. number 11 on the peridoic table
- 4. a possible form of a gene
- 6. the force of atrraction between masses
- 8. compound that dissolves in water to form a solution with a pH lower than 7
- 9. the genetic properties or features of an organism, characteristic, etc
- 12. number 6 on the periodic table
- 13. break down by water
- 14. any of the elements fluorine, chlorine, bromine, iodine, and astatine, occupying group VIIA (17) of the periodic table. They are reactive nonmetallic elements that form strongly acidic compounds with hydrogen, from which simple salts can be made
- 18. no longer in existence on the planet
- 20. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids
- 21. mechanism that makes electrical contact with the moving commutator in a motor
- 22. a thing that is composed of two or more separate elements; a mixture
- 23. compounds that contain only carbon and hydrogen atoms
- 24. periodic table is made of..
Down
- 1. the unit of electrical current
- 3. a set of cells connected together to form energy for electronics
- 5. organic matter, such as food or agricultural waste, used as an energy source
- 7. change of state from a gas to a solid
- 10. school subject
- 11. change of state to a gas from a liquid
- 15. a structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes
- 16. a part of the stamen that produces pollen and stores it
- 17. ability to do work
- 19. the basic unit of a chemical element.
- 24. a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.