The Fundamentals of Chemistry
Across
- 2. atomic mass unit
- 3. NUMBER The number of protons in a nucleus
- 4. 90-103 elements that are set apart from the rest of the periodic table
- 7. An atom that gained or lost electrons
- 8. METALS Group 1 periodic table metals that are very reactive
- 9. A positively charged particle
- 13. A vertical column on the periodic table
- 14. Rare earth metals that are actually not that rare
- 17. the process by which the nucleus of an atom element releases energy and particles
- 18. an element that has properties of both metals and nonmetals
- 19. Shiny and solid elements that conduct electricity and heat well
- 20. Atoms of the same element that have a different number of neutrons
- 21. GASES almost never react with other elements
- 22. the central region of an atom where most of the atom's mass is found in protons and neutrons is found in protons and neutrons
- 23. DECAY The change in number of protons of an atom
- 24. A negatively charged particle
Down
- 1. very reactive non-metals that easily form compounds called salts
- 5. Elements on the right side of the periodic table that are gases or liquids
- 6. METALS group 2 in the periodic table, not very reactive
- 10. METALS Elements in Group 3-2 of the periodic table that are less reactive than most other metals
- 11. ION An atom that is smaller than the atom that formed it
- 12. horizontal row of the periodic table
- 15. ION If an atom gains an electron
- 16. CLOUD A group of electrons that are outside of the nucleus
- 22. a particle that has no electric charge and is located in the atom's nucleus