Across
- 2. Positive charged ion that results from an atom losing electrons
- 6. A nerve cell
- 10. Have groups and periods
- 12. A molecule that consists of two
- 15. Elements on the right hand side of the periodic table.
- 16. The frozen water in the hydrosphere .
- 17. A group of three nucleotides on mRNA
- 19. number The number of protons in an atom.
- 21. Group or two or more atoms bonded together.
- 26. acids Small molecules that make up protons .
- 27. is to breath and live
- 28. nanotube a very small tube of carbon atoms
- 30. Programmed cell death
- 31. pool Alleles in a population
Down
- 1. The process of becoming an adult
- 3. Periodic table with
- 4. two or more different atoms bonded together.
- 5. The trans of thermal energy by direct contact with no movement of material .
- 7. only exist as a gas
- 8. A chain of amino acids
- 9. A pure substance made up of only one type of atom.
- 11. in common.
- 13. The size or extant of something
- 14. An atom that is charged
- 18. The energy possessed by moving object.
- 20. Group of 1 of the periodic table
- 22. Containing a small number of solute particles in the same volume .
- 23. has 9 atomic number
- 24. group A group of organisms
- 25. Left handed side of the periodic table.
- 29. variables that remain unchanged during an experiment.