Chemistry Cross Word

Edit Answers
1234567891011121314151617
Across
  1. 2. neutrally charged particle in an atom
  2. 3. any of a class of substances characterized by high electrical and thermal conductivity as well as by malleability, ductility, and high reflectivity of light
  3. 6. Make up a class of chemical elements with similar properties; they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six naturally occurring noble gases are helium, neon, argon, krypton, xenon, and the radioactive radon.
  4. 10. a particle smaller than an atom (e.g a neutron) or a cluster of such particles
  5. 11. 5 chemically related elements: fluorine, chlorine, bromine, iodine, astatine, and tennessine (man-made) is sometimes considered this
  6. 13. an imprecise term used to describe a chemical element that forms a simple substance having properties intermediate between those of a typical metal and a typical nonmetal
  7. 15. the determination of the age or date of organic matter from the relative proportions of the carbon isotopes carbon-12 and carbon-14 that it contains
  8. 16. the smallest particle of a chemical element that can exist
  9. 17. negatively charged particle in an atom
Down
  1. 1. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei; a radioactive form of an element.
  2. 2. can be gases, liquids or solids. are dull in colour, not shiny like metals. Not good conductors of electricity. Graphite is the only exception.
  3. 4. a positively charged particle in an atom
  4. 5. the total number of protons and neutrons in a nucleus.
  5. 7. the theory that all matter is made up of tiny indivisible particles called atoms
  6. 8. the amount of time it takes for one-half of a radioactive isotope to decay
  7. 9. a state of matter that has no fixed shape and no fixed volume
  8. 12. the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei
  9. 13. material substance that constitutes the observable universe and, together with energy, forms the basis of all objective phenomena
  10. 14. NUMBER The number of protons in the nucleus of an atom