Chemistry Cross Word
Across
- 2. neutrally charged particle in an atom
- 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
- 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.
- 10. a particle smaller than an atom (e.g a neutron) or a cluster of such particles
- 11. 5 chemically related elements: fluorine, chlorine, bromine, iodine, astatine, and tennessine (man-made) is sometimes considered this
- 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
- 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
- 16. the smallest particle of a chemical element that can exist
- 17. negatively charged particle in an atom
Down
- 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. can be gases, liquids or solids. are dull in colour, not shiny like metals. Not good conductors of electricity. Graphite is the only exception.
- 4. a positively charged particle in an atom
- 5. the total number of protons and neutrons in a nucleus.
- 7. the theory that all matter is made up of tiny indivisible particles called atoms
- 8. the amount of time it takes for one-half of a radioactive isotope to decay
- 9. a state of matter that has no fixed shape and no fixed volume
- 12. the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei
- 13. material substance that constitutes the observable universe and, together with energy, forms the basis of all objective phenomena
- 14. NUMBER The number of protons in the nucleus of an atom