Across
- 3. change where atoms are rearranged to form new substances
- 5. name of group 18 elements with full valence shells
- 8. attraction an element has for electrons
- 10. have no charge, located in the nucleus
- 11. covalent bond with an equal sharing of electrons
- 13. type of decay that emits a particle with the largest mass
- 14. nuclear energy produced when One larger nuclei splits into 2 smalle
- 15. Compound made when a metal transfers electrons to a nonmetal
- 16. when bonds are ________, energy is absorbed
- 18. Charge of a metal ion
- 21. 2 atoms with the same number of protons, but different number of neutrons
- 22. covalent bond with an unequal sharing of electrons
Down
- 1. amount of time it takes for half a radioisotope to decay
- 2. electrons in the outer shell of an atom
- 4. nuclear energy produced when 2 smaller nuclei combine to make a bigger one
- 6. Compound made when two Nonmetals share electrons
- 7. Charge of a nonmetal ion
- 9. state when one electron jumps from an inner to an outer shell
- 12. atomic number is the number of _________ in an atom
- 17. protons + neutrons
- 19. when an atom gains or loses electrons it forms a _____
- 20. two or more atoms chemically combined in a fixed proportion