Across
- 2. This is the number that represents the number of protons in the nucleus of an atom.
- 4. An element that is shiny and has the capability to conduct heat and electricity well.
- 5. State of matter that the molecules are in constant random motion.
- 9. When heat exits or leaves the substance.
- 11. A central region of an atom that is made up of protons and neutrons.
- 13. An endothermic process going from solid to liquid.
- 16. Direct change from a solid to a gas.
- 18. A negatively charged particle that is subatomic
- 19. Maintains a constant volume, but not a constant shape.
- 20. This is a subatomic particle that is positively charged, located in the nucleus
Down
- 1. Fluorine and chlorine are part of this group.
- 3. An atom that shares the same atomic number, but has a different atomic mass.
- 6. When it snows the water molecules go from a gas to a solid, this is called...
- 7. State of matter that maintains/keeps its shape.
- 8. This is the column that is vertically on the periodic table.
- 10. When one or more atom loses or gains electrons, creating a charged particle
- 12. This is when something happens at regular intervals/time.
- 14. A subatomic particle without a charge that is located in the nucleus of an atom.
- 15. This element is neither metal nor nonmetal, but has the properties of both elements.
- 17. A horizontal row of which elements are on the periodic table.