Chemistry CW 1
Across
- 1. elements in group 18 of the periodic table that share similar properties such as a full outer electron shell
- 2. A chart of all known elements that scientists reference when working with atoms or molecules
- 5. Protons and neutrons clump together at the center of an atom to form the ___________ of an atom.
- 8. Elements that are good conductors of electricity and thermal energy and are often solid at room temperature.
- 9. Anything that has mass and takes up space.
- 10. The average mass of the nucleus of that element.
- 12. ________ electron is a located in the outermost shell of an atom
- 14. elements in group 17 of the periodic table that need only one electron to complete its outer electron shell
- 19. Elements arranged in vertical columns of the periodic table that share the same properties.
- 20. elements in group 2 of the periodic table that are characterized as metals and only have two valence electrons
- 21. ________ family are the elements in group 15
- 22. A positively charged subatomic particle located at the center of an atom.
- 24. Characteristics of elements that help to identify what they are.
- 26. An abbreviation for the name of an element on the periodic table.
Down
- 1. A subatomic particle with no charge located at the center of an atom.
- 3. A subatomic particle of an atom that is negatively charged and orbits the nucleus extremely fast.
- 4. someone who studies chemistry
- 6. elements in group 1 of the periodic table that are characterized as metals and only have one valence electron
- 7. Repeating rows of the periodic table that demonstrate patterns of how elements are arranged.
- 11. Two or more atoms bonded together.
- 13. when an element has more than one possibility for the number of neutrons
- 15. The number of protons in the nucleus of each element.
- 16. _______ family are the elements in group 16
- 17. ________ family are the elements in group 13
- 18. The basic unit of an element.
- 23. this is where the electrons in an atom are found
- 25. ________ family are the elements in group 14