Across
- 1. two or more substances that are mixed together
- 3. system of electrons surrounding the nucleus of atom
- 5. can form compounds with different oxidation states
- 8. group of rare gases that include helium,neon etc.
- 10. horizontal rows in the periodic table
- 11. 6 chemical elements that make up Group 1
- 13. amount of electricity that is held or carried
- 14. positively charged center of an atom
- 15. forms a salt when it reacts with metal
- 18. negatively charged subatomic particle
- 21. elements that correspond to group 2
- 23. measure of its atomic mass
- 24. atoms have different numbers of electrons and protons
- 25. chemical element that lacks metals
- 28. subatomic particle found in the nucleus of atoms except hydrogen
- 29. organizes all chemical elements in rows and columns
- 31. certain allowed energy states for an electron
Down
- 2. magnitude of electric charge with single electron
- 3. distance of electrons from the nucleus of atom
- 4. a particle of matter
- 6. emitting radiation spontaneously
- 7. similar properties in elements in similar positions
- 9. number of electrons in the outer shell shared with another atom
- 12. a basic part of a whole
- 16. number of chemical element
- 17. atom that has enough binding energy to hold nucleus together
- 19. element that's not metal but has properties
- 20. subatomic particle found in the nucleus of atoms
- 22. a substance made from two or more different elements chemically joined
- 26. atoms with the same number of protons but different neutrons
- 27. column in the periodic table
- 30. element that readily forms positive ions and has metallic bonds