Across
- 4. the elements present in a compound.
- 5. the primary carrier of electricity in solids.
- 7. oppositely charged ions in an ionic compound.
- 10. column of elements in the periodic table.
- 12. number of protons and neutrons in a nucleus.
- 15. the basic unit of a chemical element.
- 16. number of protons in the nucleus.
- 20. horizontal row in the periodic table.
- 22. this type of ion is called an anion.
- 23. the positively charged central core of an atom.
- 27. an outer shell electron,
- 28. equal to the number of protons and neutrons.
- 30. is a poor conductor of heat and electricity.
- 32. the lose or gain of one or more electrons.
- 33. particle of about the same mass as a proton.
- 34. a radioactive form of an element.
- 35. two or more elements chemically united.
- 36. results from sharing of valence electrons
Down
- 1. a distinct and homogeneous form of matter.
- 2. vertical column in the periodic table.
- 3. a figure or symbol.
- 6. is composed of two elements.
- 8. spread of electrons of an atom.
- 9. a stable subatomic particle.
- 11. made of two different ions elements
- 13. organized list of all known elements.
- 14. this type of ion is called an cation.
- 17. specific patterns in the properties.
- 18. a group of atoms bonded together.
- 19. shares properties with metals and nonmetals.
- 21. attraction between atoms and ions.
- 24. a positively charged ion.
- 25. a negatively charged ion.
- 26. element that typically is hard, shiny solid.
- 29. non-metals, alkali metals, metals,
- 31. electrons surrounding the nucleus.